CVE-2024-38540 (GCVE-0-2024-38540)
Vulnerability from cvelistv5 – Published: 2024-06-19 13:35 – Updated: 2026-05-11 20:18
VLAI
EPSS
VEX
Title
bnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq
Summary
In the Linux kernel, the following vulnerability has been resolved:
bnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq
Undefined behavior is triggered when bnxt_qplib_alloc_init_hwq is called
with hwq_attr->aux_depth != 0 and hwq_attr->aux_stride == 0.
In that case, "roundup_pow_of_two(hwq_attr->aux_stride)" gets called.
roundup_pow_of_two is documented as undefined for 0.
Fix it in the one caller that had this combination.
The undefined behavior was detected by UBSAN:
UBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13
shift exponent 64 is too large for 64-bit type 'long unsigned int'
CPU: 24 PID: 1075 Comm: (udev-worker) Not tainted 6.9.0-rc6+ #4
Hardware name: Abacus electric, s.r.o. - servis@abacus.cz Super Server/H12SSW-iN, BIOS 2.7 10/25/2023
Call Trace:
<TASK>
dump_stack_lvl+0x5d/0x80
ubsan_epilogue+0x5/0x30
__ubsan_handle_shift_out_of_bounds.cold+0x61/0xec
__roundup_pow_of_two+0x25/0x35 [bnxt_re]
bnxt_qplib_alloc_init_hwq+0xa1/0x470 [bnxt_re]
bnxt_qplib_create_qp+0x19e/0x840 [bnxt_re]
bnxt_re_create_qp+0x9b1/0xcd0 [bnxt_re]
? srso_alias_return_thunk+0x5/0xfbef5
? srso_alias_return_thunk+0x5/0xfbef5
? __kmalloc+0x1b6/0x4f0
? create_qp.part.0+0x128/0x1c0 [ib_core]
? __pfx_bnxt_re_create_qp+0x10/0x10 [bnxt_re]
create_qp.part.0+0x128/0x1c0 [ib_core]
ib_create_qp_kernel+0x50/0xd0 [ib_core]
create_mad_qp+0x8e/0xe0 [ib_core]
? __pfx_qp_event_handler+0x10/0x10 [ib_core]
ib_mad_init_device+0x2be/0x680 [ib_core]
add_client_context+0x10d/0x1a0 [ib_core]
enable_device_and_get+0xe0/0x1d0 [ib_core]
ib_register_device+0x53c/0x630 [ib_core]
? srso_alias_return_thunk+0x5/0xfbef5
bnxt_re_probe+0xbd8/0xe50 [bnxt_re]
? __pfx_bnxt_re_probe+0x10/0x10 [bnxt_re]
auxiliary_bus_probe+0x49/0x80
? driver_sysfs_add+0x57/0xc0
really_probe+0xde/0x340
? pm_runtime_barrier+0x54/0x90
? __pfx___driver_attach+0x10/0x10
__driver_probe_device+0x78/0x110
driver_probe_device+0x1f/0xa0
__driver_attach+0xba/0x1c0
bus_for_each_dev+0x8f/0xe0
bus_add_driver+0x146/0x220
driver_register+0x72/0xd0
__auxiliary_driver_register+0x6e/0xd0
? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re]
bnxt_re_mod_init+0x3e/0xff0 [bnxt_re]
? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re]
do_one_initcall+0x5b/0x310
do_init_module+0x90/0x250
init_module_from_file+0x86/0xc0
idempotent_init_module+0x121/0x2b0
__x64_sys_finit_module+0x5e/0xb0
do_syscall_64+0x82/0x160
? srso_alias_return_thunk+0x5/0xfbef5
? syscall_exit_to_user_mode_prepare+0x149/0x170
? srso_alias_return_thunk+0x5/0xfbef5
? syscall_exit_to_user_mode+0x75/0x230
? srso_alias_return_thunk+0x5/0xfbef5
? do_syscall_64+0x8e/0x160
? srso_alias_return_thunk+0x5/0xfbef5
? __count_memcg_events+0x69/0x100
? srso_alias_return_thunk+0x5/0xfbef5
? count_memcg_events.constprop.0+0x1a/0x30
? srso_alias_return_thunk+0x5/0xfbef5
? handle_mm_fault+0x1f0/0x300
? srso_alias_return_thunk+0x5/0xfbef5
? do_user_addr_fault+0x34e/0x640
? srso_alias_return_thunk+0x5/0xfbef5
? srso_alias_return_thunk+0x5/0xfbef5
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f4e5132821d
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 db 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffca9c906a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
RAX: ffffffffffffffda RBX: 0000563ec8a8f130 RCX: 00007f4e5132821d
RDX: 0000000000000000 RSI: 00007f4e518fa07d RDI: 000000000000003b
RBP: 00007ffca9c90760 R08: 00007f4e513f6b20 R09: 00007ffca9c906f0
R10: 0000563ec8a8faa0 R11: 0000000000000246 R12: 00007f4e518fa07d
R13: 0000000000020000 R14: 0000563ec8409e90 R15: 0000563ec8a8fa60
</TASK>
---[ end trace ]---
Severity
4.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-24 15:37 UTC
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
0c4dcd602817502bb3dced7a834a13ef717d65a4 , < 66a9937187ac9b5c5ffff07b8b284483e56804d1
(git)
Affected: 0c4dcd602817502bb3dced7a834a13ef717d65a4 , < 84d2f29152184f0d72ed7c9648c4ee6927df4e59 (git) Affected: 0c4dcd602817502bb3dced7a834a13ef717d65a4 , < a658f011d89dd20cf2c7cb4760ffd79201700b98 (git) Affected: 0c4dcd602817502bb3dced7a834a13ef717d65a4 , < 627493443f3a8458cb55cdae1da254a7001123bc (git) Affected: 0c4dcd602817502bb3dced7a834a13ef717d65a4 , < 8b799c00cea6fcfe5b501bbaeb228c8821acb753 (git) Affected: 0c4dcd602817502bb3dced7a834a13ef717d65a4 , < 78cfd17142ef70599d6409cbd709d94b3da58659 (git) |
guessed | |
| Linux | Linux |
Affected:
5.7
Unaffected: 0 , < 5.7 (semver) Unaffected: 5.15.181 , ≤ 5.15.* (semver) Unaffected: 6.1.117 , ≤ 6.1.* (semver) Unaffected: 6.6.33 , ≤ 6.6.* (semver) Unaffected: 6.8.12 , ≤ 6.8.* (semver) Unaffected: 6.9.3 , ≤ 6.9.* (semver) Unaffected: 6.10 , ≤ * (original_commit_for_fix) |
guessed |
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"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
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"timestamp": "2024-06-24T15:37:42.492444Z",
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"dateUpdated": "2025-05-07T19:54:28.166Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
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"title": "CISA ADP Vulnrichment"
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"dateUpdated": "2025-11-03T21:55:46.119Z",
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{
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
}
],
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"programFiles": [
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],
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},
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"lessThanOrEqual": "6.1.*",
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"version": "6.1.117",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.33",
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{
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"status": "unaffected",
"version": "6.8.12",
"versionType": "semver"
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{
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"version": "6.9.3",
"versionType": "semver"
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{
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"status": "unaffected",
"version": "6.10",
"versionType": "original_commit_for_fix"
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]
}
],
"cpeApplicability": [
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"versionEndExcluding": "5.15.181",
"versionStartIncluding": "5.7",
"vulnerable": true
},
{
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},
{
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},
{
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"vulnerable": true
},
{
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],
"negate": false,
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq\n\nUndefined behavior is triggered when bnxt_qplib_alloc_init_hwq is called\nwith hwq_attr-\u003eaux_depth != 0 and hwq_attr-\u003eaux_stride == 0.\nIn that case, \"roundup_pow_of_two(hwq_attr-\u003eaux_stride)\" gets called.\nroundup_pow_of_two is documented as undefined for 0.\n\nFix it in the one caller that had this combination.\n\nThe undefined behavior was detected by UBSAN:\n UBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13\n shift exponent 64 is too large for 64-bit type \u0027long unsigned int\u0027\n CPU: 24 PID: 1075 Comm: (udev-worker) Not tainted 6.9.0-rc6+ #4\n Hardware name: Abacus electric, s.r.o. - servis@abacus.cz Super Server/H12SSW-iN, BIOS 2.7 10/25/2023\n Call Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x5d/0x80\n ubsan_epilogue+0x5/0x30\n __ubsan_handle_shift_out_of_bounds.cold+0x61/0xec\n __roundup_pow_of_two+0x25/0x35 [bnxt_re]\n bnxt_qplib_alloc_init_hwq+0xa1/0x470 [bnxt_re]\n bnxt_qplib_create_qp+0x19e/0x840 [bnxt_re]\n bnxt_re_create_qp+0x9b1/0xcd0 [bnxt_re]\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? __kmalloc+0x1b6/0x4f0\n ? create_qp.part.0+0x128/0x1c0 [ib_core]\n ? __pfx_bnxt_re_create_qp+0x10/0x10 [bnxt_re]\n create_qp.part.0+0x128/0x1c0 [ib_core]\n ib_create_qp_kernel+0x50/0xd0 [ib_core]\n create_mad_qp+0x8e/0xe0 [ib_core]\n ? __pfx_qp_event_handler+0x10/0x10 [ib_core]\n ib_mad_init_device+0x2be/0x680 [ib_core]\n add_client_context+0x10d/0x1a0 [ib_core]\n enable_device_and_get+0xe0/0x1d0 [ib_core]\n ib_register_device+0x53c/0x630 [ib_core]\n ? srso_alias_return_thunk+0x5/0xfbef5\n bnxt_re_probe+0xbd8/0xe50 [bnxt_re]\n ? __pfx_bnxt_re_probe+0x10/0x10 [bnxt_re]\n auxiliary_bus_probe+0x49/0x80\n ? driver_sysfs_add+0x57/0xc0\n really_probe+0xde/0x340\n ? pm_runtime_barrier+0x54/0x90\n ? __pfx___driver_attach+0x10/0x10\n __driver_probe_device+0x78/0x110\n driver_probe_device+0x1f/0xa0\n __driver_attach+0xba/0x1c0\n bus_for_each_dev+0x8f/0xe0\n bus_add_driver+0x146/0x220\n driver_register+0x72/0xd0\n __auxiliary_driver_register+0x6e/0xd0\n ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re]\n bnxt_re_mod_init+0x3e/0xff0 [bnxt_re]\n ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re]\n do_one_initcall+0x5b/0x310\n do_init_module+0x90/0x250\n init_module_from_file+0x86/0xc0\n idempotent_init_module+0x121/0x2b0\n __x64_sys_finit_module+0x5e/0xb0\n do_syscall_64+0x82/0x160\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? syscall_exit_to_user_mode_prepare+0x149/0x170\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? syscall_exit_to_user_mode+0x75/0x230\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? do_syscall_64+0x8e/0x160\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? __count_memcg_events+0x69/0x100\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? count_memcg_events.constprop.0+0x1a/0x30\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? handle_mm_fault+0x1f0/0x300\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? do_user_addr_fault+0x34e/0x640\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? srso_alias_return_thunk+0x5/0xfbef5\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n RIP: 0033:0x7f4e5132821d\n Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 db 0c 00 f7 d8 64 89 01 48\n RSP: 002b:00007ffca9c906a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139\n RAX: ffffffffffffffda RBX: 0000563ec8a8f130 RCX: 00007f4e5132821d\n RDX: 0000000000000000 RSI: 00007f4e518fa07d RDI: 000000000000003b\n RBP: 00007ffca9c90760 R08: 00007f4e513f6b20 R09: 00007ffca9c906f0\n R10: 0000563ec8a8faa0 R11: 0000000000000246 R12: 00007f4e518fa07d\n R13: 0000000000020000 R14: 0000563ec8409e90 R15: 0000563ec8a8fa60\n \u003c/TASK\u003e\n ---[ end trace ]---"
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T20:18:38.958Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/66a9937187ac9b5c5ffff07b8b284483e56804d1"
},
{
"url": "https://git.kernel.org/stable/c/84d2f29152184f0d72ed7c9648c4ee6927df4e59"
},
{
"url": "https://git.kernel.org/stable/c/a658f011d89dd20cf2c7cb4760ffd79201700b98"
},
{
"url": "https://git.kernel.org/stable/c/627493443f3a8458cb55cdae1da254a7001123bc"
},
{
"url": "https://git.kernel.org/stable/c/8b799c00cea6fcfe5b501bbaeb228c8821acb753"
},
{
"url": "https://git.kernel.org/stable/c/78cfd17142ef70599d6409cbd709d94b3da58659"
}
],
"title": "bnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-38540",
"datePublished": "2024-06-19T13:35:15.823Z",
"dateReserved": "2024-06-18T19:36:34.918Z",
"dateUpdated": "2026-05-11T20:18:38.958Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2024-38540",
"date": "2026-09-16",
"epss": "0.00249",
"percentile": "0.16389"
},
"fkie_nvd": {
"descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq\\n\\nUndefined behavior is triggered when bnxt_qplib_alloc_init_hwq is called\\nwith hwq_attr-\u003eaux_depth != 0 and hwq_attr-\u003eaux_stride == 0.\\nIn that case, \\\"roundup_pow_of_two(hwq_attr-\u003eaux_stride)\\\" gets called.\\nroundup_pow_of_two is documented as undefined for 0.\\n\\nFix it in the one caller that had this combination.\\n\\nThe undefined behavior was detected by UBSAN:\\n UBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13\\n shift exponent 64 is too large for 64-bit type \u0027long unsigned int\u0027\\n CPU: 24 PID: 1075 Comm: (udev-worker) Not tainted 6.9.0-rc6+ #4\\n Hardware name: Abacus electric, s.r.o. - servis@abacus.cz Super Server/H12SSW-iN, BIOS 2.7 10/25/2023\\n Call Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x5d/0x80\\n ubsan_epilogue+0x5/0x30\\n __ubsan_handle_shift_out_of_bounds.cold+0x61/0xec\\n __roundup_pow_of_two+0x25/0x35 [bnxt_re]\\n bnxt_qplib_alloc_init_hwq+0xa1/0x470 [bnxt_re]\\n bnxt_qplib_create_qp+0x19e/0x840 [bnxt_re]\\n bnxt_re_create_qp+0x9b1/0xcd0 [bnxt_re]\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? __kmalloc+0x1b6/0x4f0\\n ? create_qp.part.0+0x128/0x1c0 [ib_core]\\n ? __pfx_bnxt_re_create_qp+0x10/0x10 [bnxt_re]\\n create_qp.part.0+0x128/0x1c0 [ib_core]\\n ib_create_qp_kernel+0x50/0xd0 [ib_core]\\n create_mad_qp+0x8e/0xe0 [ib_core]\\n ? __pfx_qp_event_handler+0x10/0x10 [ib_core]\\n ib_mad_init_device+0x2be/0x680 [ib_core]\\n add_client_context+0x10d/0x1a0 [ib_core]\\n enable_device_and_get+0xe0/0x1d0 [ib_core]\\n ib_register_device+0x53c/0x630 [ib_core]\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n bnxt_re_probe+0xbd8/0xe50 [bnxt_re]\\n ? __pfx_bnxt_re_probe+0x10/0x10 [bnxt_re]\\n auxiliary_bus_probe+0x49/0x80\\n ? driver_sysfs_add+0x57/0xc0\\n really_probe+0xde/0x340\\n ? pm_runtime_barrier+0x54/0x90\\n ? __pfx___driver_attach+0x10/0x10\\n __driver_probe_device+0x78/0x110\\n driver_probe_device+0x1f/0xa0\\n __driver_attach+0xba/0x1c0\\n bus_for_each_dev+0x8f/0xe0\\n bus_add_driver+0x146/0x220\\n driver_register+0x72/0xd0\\n __auxiliary_driver_register+0x6e/0xd0\\n ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re]\\n bnxt_re_mod_init+0x3e/0xff0 [bnxt_re]\\n ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re]\\n do_one_initcall+0x5b/0x310\\n do_init_module+0x90/0x250\\n init_module_from_file+0x86/0xc0\\n idempotent_init_module+0x121/0x2b0\\n __x64_sys_finit_module+0x5e/0xb0\\n do_syscall_64+0x82/0x160\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? syscall_exit_to_user_mode_prepare+0x149/0x170\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? syscall_exit_to_user_mode+0x75/0x230\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? do_syscall_64+0x8e/0x160\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? __count_memcg_events+0x69/0x100\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? count_memcg_events.constprop.0+0x1a/0x30\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? handle_mm_fault+0x1f0/0x300\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? do_user_addr_fault+0x34e/0x640\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n RIP: 0033:0x7f4e5132821d\\n Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 db 0c 00 f7 d8 64 89 01 48\\n RSP: 002b:00007ffca9c906a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139\\n RAX: ffffffffffffffda RBX: 0000563ec8a8f130 RCX: 00007f4e5132821d\\n RDX: 0000000000000000 RSI: 00007f4e518fa07d RDI: 000000000000003b\\n RBP: 00007ffca9c90760 R08: 00007f4e513f6b20 R09: 00007ffca9c906f0\\n R10: 0000563ec8a8faa0 R11: 0000000000000246 R12: 00007f4e518fa07d\\n R13: 0000000000020000 R14: 0000563ec8409e90 R15: 0000563ec8a8fa60\\n \u003c/TASK\u003e\\n ---[ end trace ]---\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bnxt_re: evita el comportamiento de cambio indefinido en bnxt_qplib_alloc_init_hwq El comportamiento indefinido se activa cuando se llama a bnxt_qplib_alloc_init_hwq con hwq_attr-\u0026gt;aux_ Depth != 0 y hwq_attr-\u0026gt;aux_stride == 0. En ese caso, \\\" Se llama a roundup_pow_of_two(hwq_attr-\u0026gt;aux_stride)\\\". roundup_pow_of_two est\\u00e1 documentado como indefinido para 0. Corr\\u00edjalo en la \\u00fanica persona que llam\\u00f3 que ten\\u00eda esta combinaci\\u00f3n. UBSAN detect\\u00f3 el comportamiento indefinido: UBSAN: desplazamiento fuera de los l\\u00edmites en ./include/linux/log2.h:57:13 el exponente de desplazamiento 64 es demasiado grande para CPU \u0027long unsigned int\u0027 de tipo de 64 bits: 24 PID: 1075 Comm: (udev-worker) Not tainted 6.9.0-rc6+ #4 Nombre del hardware: Abacus electric, sro - servis@abacus.cz Super Server/H12SSW-iN, BIOS 2.7 25/10/2023 Seguimiento de llamadas: \u0026lt; TAREA\u0026gt; dump_stack_lvl+0x5d/0x80 ubsan_epilogue+0x5/0x30 __ubsan_handle_shift_out_of_bounds.cold+0x61/0xec __roundup_pow_of_two+0x25/0x35 [bnxt_re] bnxt_qplib_alloc_init_hwq+0xa1/0x470 bnxt_re] bnxt_qplib_create_qp+0x19e/0x840 [bnxt_re] bnxt_re_create_qp+0x9b1/0xcd0 [bnxt_re ] ? srso_alias_return_thunk+0x5/0xfbef5? srso_alias_return_thunk+0x5/0xfbef5? __kmalloc+0x1b6/0x4f0 ? create_qp.part.0+0x128/0x1c0 [ib_core]? __pfx_bnxt_re_create_qp+0x10/0x10 [bnxt_re] create_qp.part.0+0x128/0x1c0 [ib_core] ib_create_qp_kernel+0x50/0xd0 [ib_core] create_mad_qp+0x8e/0xe0 [ib_core] ? __pfx_qp_event_handler+0x10/0x10 [ib_core] ib_mad_init_device+0x2be/0x680 [ib_core] add_client_context+0x10d/0x1a0 [ib_core] enable_device_and_get+0xe0/0x1d0 [ib_register_device+0x53c/0x63 0 [ib_core] ? srso_alias_return_thunk+0x5/0xfbef5 bnxt_re_probe+0xbd8/0xe50 [bnxt_re] ? __pfx_bnxt_re_probe+0x10/0x10 [bnxt_re] sonda_bus_auxiliar+0x49/0x80 ? driver_sysfs_add+0x57/0xc0 realmente_probe+0xde/0x340? pm_runtime_barrier+0x54/0x90? __pfx___driver_attach+0x10/0x10 __driver_probe_device+0x78/0x110 driver_probe_device+0x1f/0xa0 __driver_attach+0xba/0x1c0 bus_for_each_dev+0x8f/0xe0 bus_add_driver+0x146/0x220 driver_register+0x72/ 0xd0 __auxiliary_driver_register+0x6e/0xd0 ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re] bnxt_re_mod_init+0x3e/0xff0 [bnxt_re] ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re] do_one_initcall+0x5b/0x310 do_init_module+0x90/0x250 init_module_from_file+0x86/0xc0 idempotent_init_module+0x121/0x2b0 __x64_sys_finit _module+0x5e/0xb0 do_syscall_64+0x82/0x160 ? srso_alias_return_thunk+0x5/0xfbef5? syscall_exit_to_user_mode_prepare+0x149/0x170? srso_alias_return_thunk+0x5/0xfbef5? syscall_exit_to_user_mode+0x75/0x230? srso_alias_return_thunk+0x5/0xfbef5? do_syscall_64+0x8e/0x160? srso_alias_return_thunk+0x5/0xfbef5? __count_memcg_events+0x69/0x100? srso_alias_return_thunk+0x5/0xfbef5? count_memcg_events.constprop.0+0x1a/0x30? srso_alias_return_thunk+0x5/0xfbef5? handle_mm_fault+0x1f0/0x300? srso_alias_return_thunk+0x5/0xfbef5? do_user_addr_fault+0x34e/0x640? srso_alias_return_thunk+0x5/0xfbef5? srso_alias_return_thunk+0x5/0xfbef5 Entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f4e5132821d C\\u00f3digo: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 9 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u0026lt;48\u0026gt; 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 db 0c 00 f7 d8 64 89 01 48 RSP: 002b:00007ffca9c906a8 EFLAGS: 00000246 IG_RAX: 0000000000000139 RAX: ffffffffffffffda RBX: 0000563ec8a8f130 RCX: 00007f4e5132821d RDX: 0000000000000000 RSI: 00007f4e518fa07d RDI: 000000000000003b RBP: 00007ffca9c90760 R08: 00007f4e513f6b20 00007ffca9c906f0 R10: 0000563ec8a8faa0 R11: 0000000000000246 R12: 00007f4e518fa07d R13: 0000000000020000 R14: 0000563ec8409e90 R15: 0563ec8a8fa60 ---[ finalizar rastreo ] ---\"}]",
"id": "CVE-2024-38540",
"lastModified": "2024-11-21T09:26:16.873",
"metrics": "{\"cvssMetricV31\": [{\"source\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 4.4, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"HIGH\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 0.8, \"impactScore\": 3.6}]}",
"published": "2024-06-19T14:15:14.290",
"references": "[{\"url\": \"https://git.kernel.org/stable/c/627493443f3a8458cb55cdae1da254a7001123bc\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/78cfd17142ef70599d6409cbd709d94b3da58659\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/84d2f29152184f0d72ed7c9648c4ee6927df4e59\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/8b799c00cea6fcfe5b501bbaeb228c8821acb753\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/a658f011d89dd20cf2c7cb4760ffd79201700b98\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/627493443f3a8458cb55cdae1da254a7001123bc\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/78cfd17142ef70599d6409cbd709d94b3da58659\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/8b799c00cea6fcfe5b501bbaeb228c8821acb753\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/a658f011d89dd20cf2c7cb4760ffd79201700b98\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
},
"microsoft_vex": {
"current_release_date": "2026-02-18T01:53:27.000Z",
"cve": "CVE-2024-38540",
"id": "msrc_CVE-2024-38540",
"initial_release_date": "2024-06-02T07:00:00.000Z",
"product_status:fixed": "2",
"product_status:known_affected": "2",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "bnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq",
"url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-38540.json",
"version": "2"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2024-38540\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-06-19T14:15:14.290\",\"lastModified\":\"2026-06-17T07:40:30.030\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq\\n\\nUndefined behavior is triggered when bnxt_qplib_alloc_init_hwq is called\\nwith hwq_attr-\u003eaux_depth != 0 and hwq_attr-\u003eaux_stride == 0.\\nIn that case, \\\"roundup_pow_of_two(hwq_attr-\u003eaux_stride)\\\" gets called.\\nroundup_pow_of_two is documented as undefined for 0.\\n\\nFix it in the one caller that had this combination.\\n\\nThe undefined behavior was detected by UBSAN:\\n UBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13\\n shift exponent 64 is too large for 64-bit type \u0027long unsigned int\u0027\\n CPU: 24 PID: 1075 Comm: (udev-worker) Not tainted 6.9.0-rc6+ #4\\n Hardware name: Abacus electric, s.r.o. - servis@abacus.cz Super Server/H12SSW-iN, BIOS 2.7 10/25/2023\\n Call Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x5d/0x80\\n ubsan_epilogue+0x5/0x30\\n __ubsan_handle_shift_out_of_bounds.cold+0x61/0xec\\n __roundup_pow_of_two+0x25/0x35 [bnxt_re]\\n bnxt_qplib_alloc_init_hwq+0xa1/0x470 [bnxt_re]\\n bnxt_qplib_create_qp+0x19e/0x840 [bnxt_re]\\n bnxt_re_create_qp+0x9b1/0xcd0 [bnxt_re]\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? __kmalloc+0x1b6/0x4f0\\n ? create_qp.part.0+0x128/0x1c0 [ib_core]\\n ? __pfx_bnxt_re_create_qp+0x10/0x10 [bnxt_re]\\n create_qp.part.0+0x128/0x1c0 [ib_core]\\n ib_create_qp_kernel+0x50/0xd0 [ib_core]\\n create_mad_qp+0x8e/0xe0 [ib_core]\\n ? __pfx_qp_event_handler+0x10/0x10 [ib_core]\\n ib_mad_init_device+0x2be/0x680 [ib_core]\\n add_client_context+0x10d/0x1a0 [ib_core]\\n enable_device_and_get+0xe0/0x1d0 [ib_core]\\n ib_register_device+0x53c/0x630 [ib_core]\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n bnxt_re_probe+0xbd8/0xe50 [bnxt_re]\\n ? __pfx_bnxt_re_probe+0x10/0x10 [bnxt_re]\\n auxiliary_bus_probe+0x49/0x80\\n ? driver_sysfs_add+0x57/0xc0\\n really_probe+0xde/0x340\\n ? pm_runtime_barrier+0x54/0x90\\n ? __pfx___driver_attach+0x10/0x10\\n __driver_probe_device+0x78/0x110\\n driver_probe_device+0x1f/0xa0\\n __driver_attach+0xba/0x1c0\\n bus_for_each_dev+0x8f/0xe0\\n bus_add_driver+0x146/0x220\\n driver_register+0x72/0xd0\\n __auxiliary_driver_register+0x6e/0xd0\\n ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re]\\n bnxt_re_mod_init+0x3e/0xff0 [bnxt_re]\\n ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re]\\n do_one_initcall+0x5b/0x310\\n do_init_module+0x90/0x250\\n init_module_from_file+0x86/0xc0\\n idempotent_init_module+0x121/0x2b0\\n __x64_sys_finit_module+0x5e/0xb0\\n do_syscall_64+0x82/0x160\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? syscall_exit_to_user_mode_prepare+0x149/0x170\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? syscall_exit_to_user_mode+0x75/0x230\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? do_syscall_64+0x8e/0x160\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? __count_memcg_events+0x69/0x100\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? count_memcg_events.constprop.0+0x1a/0x30\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? handle_mm_fault+0x1f0/0x300\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? do_user_addr_fault+0x34e/0x640\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n RIP: 0033:0x7f4e5132821d\\n Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 db 0c 00 f7 d8 64 89 01 48\\n RSP: 002b:00007ffca9c906a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139\\n RAX: ffffffffffffffda RBX: 0000563ec8a8f130 RCX: 00007f4e5132821d\\n RDX: 0000000000000000 RSI: 00007f4e518fa07d RDI: 000000000000003b\\n RBP: 00007ffca9c90760 R08: 00007f4e513f6b20 R09: 00007ffca9c906f0\\n R10: 0000563ec8a8faa0 R11: 0000000000000246 R12: 00007f4e518fa07d\\n R13: 0000000000020000 R14: 0000563ec8409e90 R15: 0000563ec8a8fa60\\n \u003c/TASK\u003e\\n ---[ end trace ]---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bnxt_re: evita el comportamiento de cambio indefinido en bnxt_qplib_alloc_init_hwq El comportamiento indefinido se activa cuando se llama a bnxt_qplib_alloc_init_hwq con hwq_attr-\u0026gt;aux_ Depth != 0 y hwq_attr-\u0026gt;aux_stride == 0. En ese caso, \\\" Se llama a roundup_pow_of_two(hwq_attr-\u0026gt;aux_stride)\\\". roundup_pow_of_two est\u00e1 documentado como indefinido para 0. Corr\u00edjalo en la \u00fanica persona que llam\u00f3 que ten\u00eda esta combinaci\u00f3n. UBSAN detect\u00f3 el comportamiento indefinido: UBSAN: desplazamiento fuera de los l\u00edmites en ./include/linux/log2.h:57:13 el exponente de desplazamiento 64 es demasiado grande para CPU \u0027long unsigned int\u0027 de tipo de 64 bits: 24 PID: 1075 Comm: (udev-worker) Not tainted 6.9.0-rc6+ #4 Nombre del hardware: Abacus electric, sro - servis@abacus.cz Super Server/H12SSW-iN, BIOS 2.7 25/10/2023 Seguimiento de llamadas: \u0026lt; TAREA\u0026gt; dump_stack_lvl+0x5d/0x80 ubsan_epilogue+0x5/0x30 __ubsan_handle_shift_out_of_bounds.cold+0x61/0xec __roundup_pow_of_two+0x25/0x35 [bnxt_re] bnxt_qplib_alloc_init_hwq+0xa1/0x470 bnxt_re] bnxt_qplib_create_qp+0x19e/0x840 [bnxt_re] bnxt_re_create_qp+0x9b1/0xcd0 [bnxt_re ] ? srso_alias_return_thunk+0x5/0xfbef5? srso_alias_return_thunk+0x5/0xfbef5? __kmalloc+0x1b6/0x4f0 ? create_qp.part.0+0x128/0x1c0 [ib_core]? __pfx_bnxt_re_create_qp+0x10/0x10 [bnxt_re] create_qp.part.0+0x128/0x1c0 [ib_core] ib_create_qp_kernel+0x50/0xd0 [ib_core] create_mad_qp+0x8e/0xe0 [ib_core] ? __pfx_qp_event_handler+0x10/0x10 [ib_core] ib_mad_init_device+0x2be/0x680 [ib_core] add_client_context+0x10d/0x1a0 [ib_core] enable_device_and_get+0xe0/0x1d0 [ib_register_device+0x53c/0x63 0 [ib_core] ? srso_alias_return_thunk+0x5/0xfbef5 bnxt_re_probe+0xbd8/0xe50 [bnxt_re] ? __pfx_bnxt_re_probe+0x10/0x10 [bnxt_re] sonda_bus_auxiliar+0x49/0x80 ? driver_sysfs_add+0x57/0xc0 realmente_probe+0xde/0x340? pm_runtime_barrier+0x54/0x90? __pfx___driver_attach+0x10/0x10 __driver_probe_device+0x78/0x110 driver_probe_device+0x1f/0xa0 __driver_attach+0xba/0x1c0 bus_for_each_dev+0x8f/0xe0 bus_add_driver+0x146/0x220 driver_register+0x72/ 0xd0 __auxiliary_driver_register+0x6e/0xd0 ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re] bnxt_re_mod_init+0x3e/0xff0 [bnxt_re] ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re] do_one_initcall+0x5b/0x310 do_init_module+0x90/0x250 init_module_from_file+0x86/0xc0 idempotent_init_module+0x121/0x2b0 __x64_sys_finit _module+0x5e/0xb0 do_syscall_64+0x82/0x160 ? srso_alias_return_thunk+0x5/0xfbef5? syscall_exit_to_user_mode_prepare+0x149/0x170? srso_alias_return_thunk+0x5/0xfbef5? syscall_exit_to_user_mode+0x75/0x230? srso_alias_return_thunk+0x5/0xfbef5? do_syscall_64+0x8e/0x160? srso_alias_return_thunk+0x5/0xfbef5? __count_memcg_events+0x69/0x100? srso_alias_return_thunk+0x5/0xfbef5? count_memcg_events.constprop.0+0x1a/0x30? srso_alias_return_thunk+0x5/0xfbef5? handle_mm_fault+0x1f0/0x300? srso_alias_return_thunk+0x5/0xfbef5? do_user_addr_fault+0x34e/0x640? srso_alias_return_thunk+0x5/0xfbef5? srso_alias_return_thunk+0x5/0xfbef5 Entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f4e5132821d C\u00f3digo: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 9 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u0026lt;48\u0026gt; 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 db 0c 00 f7 d8 64 89 01 48 RSP: 002b:00007ffca9c906a8 EFLAGS: 00000246 IG_RAX: 0000000000000139 RAX: ffffffffffffffda RBX: 0000563ec8a8f130 RCX: 00007f4e5132821d RDX: 0000000000000000 RSI: 00007f4e518fa07d RDI: 000000000000003b RBP: 00007ffca9c90760 R08: 00007f4e513f6b20 00007ffca9c906f0 R10: 0000563ec8a8faa0 R11: 0000000000000246 R12: 00007f4e518fa07d R13: 0000000000020000 R14: 0000563ec8409e90 R15: 0563ec8a8fa60 ---[ finalizar rastreo ] ---\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/infiniband/hw/bnxt_re/qplib_fp.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"0c4dcd602817502bb3dced7a834a13ef717d65a4\",\"lessThan\":\"66a9937187ac9b5c5ffff07b8b284483e56804d1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0c4dcd602817502bb3dced7a834a13ef717d65a4\",\"lessThan\":\"84d2f29152184f0d72ed7c9648c4ee6927df4e59\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0c4dcd602817502bb3dced7a834a13ef717d65a4\",\"lessThan\":\"a658f011d89dd20cf2c7cb4760ffd79201700b98\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0c4dcd602817502bb3dced7a834a13ef717d65a4\",\"lessThan\":\"627493443f3a8458cb55cdae1da254a7001123bc\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0c4dcd602817502bb3dced7a834a13ef717d65a4\",\"lessThan\":\"8b799c00cea6fcfe5b501bbaeb228c8821acb753\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0c4dcd602817502bb3dced7a834a13ef717d65a4\",\"lessThan\":\"78cfd17142ef70599d6409cbd709d94b3da58659\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/infiniband/hw/bnxt_re/qplib_fp.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.7\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.7\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.181\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.117\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.33\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.8.12\",\"lessThanOrEqual\":\"6.8.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.9.3\",\"lessThanOrEqual\":\"6.9.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.10\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.4,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":0.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-06-24T15:37:42.492444Z\",\"id\":\"CVE-2024-38540\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.7\",\"versionEndExcluding\":\"6.1.117\",\"matchCriteriaId\":\"6F73CA47-4230-43ED-A152-CD093E87C1F3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.33\",\"matchCriteriaId\":\"FCE796DF-3B50-4DC6-BAE5-95271068FC9E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.8.12\",\"matchCriteriaId\":\"80550309-67AB-4FD1-AC07-3DED5C4F01B2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.9\",\"versionEndExcluding\":\"6.9.3\",\"matchCriteriaId\":\"E07124C1-19E8-4D21-828D-9932A01D3011\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/627493443f3a8458cb55cdae1da254a7001123bc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/66a9937187ac9b5c5ffff07b8b284483e56804d1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/78cfd17142ef70599d6409cbd709d94b3da58659\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/84d2f29152184f0d72ed7c9648c4ee6927df4e59\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8b799c00cea6fcfe5b501bbaeb228c8821acb753\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a658f011d89dd20cf2c7cb4760ffd79201700b98\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/627493443f3a8458cb55cdae1da254a7001123bc\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/78cfd17142ef70599d6409cbd709d94b3da58659\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8b799c00cea6fcfe5b501bbaeb228c8821acb753\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a658f011d89dd20cf2c7cb4760ffd79201700b98\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-28T07:49:34+00:00",
"cve": "CVE-2024-38540",
"id": "CVE-2024-38540",
"initial_release_date": "2024-06-19T00:00:00+00:00",
"product_status:fixed": "926",
"product_status:known_affected": "50",
"product_status:known_not_affected": "18",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: bnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-38540.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-29T01:53:42Z",
"cve": "CVE-2024-38540",
"id": "CVE-2024-38540",
"initial_release_date": "2024-06-21T03:06:36Z",
"product_status:known_affected": "359",
"product_status:known_not_affected": "152",
"product_status:recommended": "700",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2024-38540",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-38540.json",
"version": "99"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/a658f011d89dd20cf2c7cb4760ffd79201700b98\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/627493443f3a8458cb55cdae1da254a7001123bc\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/8b799c00cea6fcfe5b501bbaeb228c8821acb753\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/78cfd17142ef70599d6409cbd709d94b3da58659\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T21:55:46.119Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.4, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"HIGH\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-38540\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-06-24T15:37:42.492444Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-24T15:37:48.896Z\"}}], \"cna\": {\"title\": \"bnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"0c4dcd602817502bb3dced7a834a13ef717d65a4\", \"lessThan\": \"66a9937187ac9b5c5ffff07b8b284483e56804d1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0c4dcd602817502bb3dced7a834a13ef717d65a4\", \"lessThan\": \"84d2f29152184f0d72ed7c9648c4ee6927df4e59\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0c4dcd602817502bb3dced7a834a13ef717d65a4\", \"lessThan\": \"a658f011d89dd20cf2c7cb4760ffd79201700b98\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0c4dcd602817502bb3dced7a834a13ef717d65a4\", \"lessThan\": \"627493443f3a8458cb55cdae1da254a7001123bc\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0c4dcd602817502bb3dced7a834a13ef717d65a4\", \"lessThan\": \"8b799c00cea6fcfe5b501bbaeb228c8821acb753\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0c4dcd602817502bb3dced7a834a13ef717d65a4\", \"lessThan\": \"78cfd17142ef70599d6409cbd709d94b3da58659\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/infiniband/hw/bnxt_re/qplib_fp.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.7\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.7\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.181\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.117\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.33\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.9.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/infiniband/hw/bnxt_re/qplib_fp.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/66a9937187ac9b5c5ffff07b8b284483e56804d1\"}, {\"url\": \"https://git.kernel.org/stable/c/84d2f29152184f0d72ed7c9648c4ee6927df4e59\"}, {\"url\": \"https://git.kernel.org/stable/c/a658f011d89dd20cf2c7cb4760ffd79201700b98\"}, {\"url\": \"https://git.kernel.org/stable/c/627493443f3a8458cb55cdae1da254a7001123bc\"}, {\"url\": \"https://git.kernel.org/stable/c/8b799c00cea6fcfe5b501bbaeb228c8821acb753\"}, {\"url\": \"https://git.kernel.org/stable/c/78cfd17142ef70599d6409cbd709d94b3da58659\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq\\n\\nUndefined behavior is triggered when bnxt_qplib_alloc_init_hwq is called\\nwith hwq_attr-\u003eaux_depth != 0 and hwq_attr-\u003eaux_stride == 0.\\nIn that case, \\\"roundup_pow_of_two(hwq_attr-\u003eaux_stride)\\\" gets called.\\nroundup_pow_of_two is documented as undefined for 0.\\n\\nFix it in the one caller that had this combination.\\n\\nThe undefined behavior was detected by UBSAN:\\n UBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13\\n shift exponent 64 is too large for 64-bit type \u0027long unsigned int\u0027\\n CPU: 24 PID: 1075 Comm: (udev-worker) Not tainted 6.9.0-rc6+ #4\\n Hardware name: Abacus electric, s.r.o. - servis@abacus.cz Super Server/H12SSW-iN, BIOS 2.7 10/25/2023\\n Call Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x5d/0x80\\n ubsan_epilogue+0x5/0x30\\n __ubsan_handle_shift_out_of_bounds.cold+0x61/0xec\\n __roundup_pow_of_two+0x25/0x35 [bnxt_re]\\n bnxt_qplib_alloc_init_hwq+0xa1/0x470 [bnxt_re]\\n bnxt_qplib_create_qp+0x19e/0x840 [bnxt_re]\\n bnxt_re_create_qp+0x9b1/0xcd0 [bnxt_re]\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? __kmalloc+0x1b6/0x4f0\\n ? create_qp.part.0+0x128/0x1c0 [ib_core]\\n ? __pfx_bnxt_re_create_qp+0x10/0x10 [bnxt_re]\\n create_qp.part.0+0x128/0x1c0 [ib_core]\\n ib_create_qp_kernel+0x50/0xd0 [ib_core]\\n create_mad_qp+0x8e/0xe0 [ib_core]\\n ? __pfx_qp_event_handler+0x10/0x10 [ib_core]\\n ib_mad_init_device+0x2be/0x680 [ib_core]\\n add_client_context+0x10d/0x1a0 [ib_core]\\n enable_device_and_get+0xe0/0x1d0 [ib_core]\\n ib_register_device+0x53c/0x630 [ib_core]\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n bnxt_re_probe+0xbd8/0xe50 [bnxt_re]\\n ? __pfx_bnxt_re_probe+0x10/0x10 [bnxt_re]\\n auxiliary_bus_probe+0x49/0x80\\n ? driver_sysfs_add+0x57/0xc0\\n really_probe+0xde/0x340\\n ? pm_runtime_barrier+0x54/0x90\\n ? __pfx___driver_attach+0x10/0x10\\n __driver_probe_device+0x78/0x110\\n driver_probe_device+0x1f/0xa0\\n __driver_attach+0xba/0x1c0\\n bus_for_each_dev+0x8f/0xe0\\n bus_add_driver+0x146/0x220\\n driver_register+0x72/0xd0\\n __auxiliary_driver_register+0x6e/0xd0\\n ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re]\\n bnxt_re_mod_init+0x3e/0xff0 [bnxt_re]\\n ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re]\\n do_one_initcall+0x5b/0x310\\n do_init_module+0x90/0x250\\n init_module_from_file+0x86/0xc0\\n idempotent_init_module+0x121/0x2b0\\n __x64_sys_finit_module+0x5e/0xb0\\n do_syscall_64+0x82/0x160\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? syscall_exit_to_user_mode_prepare+0x149/0x170\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? syscall_exit_to_user_mode+0x75/0x230\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? do_syscall_64+0x8e/0x160\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? __count_memcg_events+0x69/0x100\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? count_memcg_events.constprop.0+0x1a/0x30\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? handle_mm_fault+0x1f0/0x300\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? do_user_addr_fault+0x34e/0x640\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n RIP: 0033:0x7f4e5132821d\\n Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 db 0c 00 f7 d8 64 89 01 48\\n RSP: 002b:00007ffca9c906a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139\\n RAX: ffffffffffffffda RBX: 0000563ec8a8f130 RCX: 00007f4e5132821d\\n RDX: 0000000000000000 RSI: 00007f4e518fa07d RDI: 000000000000003b\\n RBP: 00007ffca9c90760 R08: 00007f4e513f6b20 R09: 00007ffca9c906f0\\n R10: 0000563ec8a8faa0 R11: 0000000000000246 R12: 00007f4e518fa07d\\n R13: 0000000000020000 R14: 0000563ec8409e90 R15: 0000563ec8a8fa60\\n \u003c/TASK\u003e\\n ---[ end trace ]---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.181\", \"versionStartIncluding\": \"5.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.117\", \"versionStartIncluding\": \"5.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.33\", \"versionStartIncluding\": \"5.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.12\", \"versionStartIncluding\": \"5.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9.3\", \"versionStartIncluding\": \"5.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10\", \"versionStartIncluding\": \"5.7\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:18:38.958Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2024-38540\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T20:18:38.958Z\", \"dateReserved\": \"2024-06-18T19:36:34.918Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-19T13:35:15.823Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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