FKIE_CVE-2024-36939
Vulnerability from fkie_nvd - Published: 2024-05-30 16:15 - Updated: 2026-06-17 07:37
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
nfs: Handle error of rpc_proc_register() in nfs_net_init().
syzkaller reported a warning [0] triggered while destroying immature
netns.
rpc_proc_register() was called in init_nfs_fs(), but its error
has been ignored since at least the initial commit 1da177e4c3f4
("Linux-2.6.12-rc2").
Recently, commit d47151b79e32 ("nfs: expose /proc/net/sunrpc/nfs
in net namespaces") converted the procfs to per-netns and made
the problem more visible.
Even when rpc_proc_register() fails, nfs_net_init() could succeed,
and thus nfs_net_exit() will be called while destroying the netns.
Then, remove_proc_entry() will be called for non-existing proc
directory and trigger the warning below.
Let's handle the error of rpc_proc_register() properly in nfs_net_init().
[0]:
name 'nfs'
WARNING: CPU: 1 PID: 1710 at fs/proc/generic.c:711 remove_proc_entry+0x1bb/0x2d0 fs/proc/generic.c:711
Modules linked in:
CPU: 1 PID: 1710 Comm: syz-executor.2 Not tainted 6.8.0-12822-gcd51db110a7e #12
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
RIP: 0010:remove_proc_entry+0x1bb/0x2d0 fs/proc/generic.c:711
Code: 41 5d 41 5e c3 e8 85 09 b5 ff 48 c7 c7 88 58 64 86 e8 09 0e 71 02 e8 74 09 b5 ff 4c 89 e6 48 c7 c7 de 1b 80 84 e8 c5 ad 97 ff <0f> 0b eb b1 e8 5c 09 b5 ff 48 c7 c7 88 58 64 86 e8 e0 0d 71 02 eb
RSP: 0018:ffffc9000c6d7ce0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff8880422b8b00 RCX: ffffffff8110503c
RDX: ffff888030652f00 RSI: ffffffff81105045 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffffffff81bb62cb R12: ffffffff84807ffc
R13: ffff88804ad6fcc0 R14: ffffffff84807ffc R15: ffffffff85741ff8
FS: 00007f30cfba8640(0000) GS:ffff88807dd00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff51afe8000 CR3: 000000005a60a005 CR4: 0000000000770ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
<TASK>
rpc_proc_unregister+0x64/0x70 net/sunrpc/stats.c:310
nfs_net_exit+0x1c/0x30 fs/nfs/inode.c:2438
ops_exit_list+0x62/0xb0 net/core/net_namespace.c:170
setup_net+0x46c/0x660 net/core/net_namespace.c:372
copy_net_ns+0x244/0x590 net/core/net_namespace.c:505
create_new_namespaces+0x2ed/0x770 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0xae/0x160 kernel/nsproxy.c:228
ksys_unshare+0x342/0x760 kernel/fork.c:3322
__do_sys_unshare kernel/fork.c:3393 [inline]
__se_sys_unshare kernel/fork.c:3391 [inline]
__x64_sys_unshare+0x1f/0x30 kernel/fork.c:3391
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x4f/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x46/0x4e
RIP: 0033:0x7f30d0febe5d
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 73 9f 1b 00 f7 d8 64 89 01 48
RSP: 002b:00007f30cfba7cc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00000000004bbf80 RCX: 00007f30d0febe5d
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000006c020600
RBP: 00000000004bbf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 000000000000000b R14: 00007f30d104c530 R15: 0000000000000000
</TASK>
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | 2.6.12 | |
| linux | linux_kernel | 2.6.12 | |
| linux | linux_kernel | 2.6.12 | |
| linux | linux_kernel | 2.6.12 | |
| linux | linux_kernel | 2.6.12 | |
| linux | linux_kernel | 6.9 | |
| linux | linux_kernel | 6.9 | |
| linux | linux_kernel | 6.9 | |
| linux | linux_kernel | 6.9 | |
| linux | linux_kernel | 6.9 | |
| linux | linux_kernel | 6.9 | |
| debian | debian_linux | 10.0 |
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}
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
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"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"vendor": "Siemens",
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}
]
}
],
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}
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfs: Handle error of rpc_proc_register() in nfs_net_init().\n\nsyzkaller reported a warning [0] triggered while destroying immature\nnetns.\n\nrpc_proc_register() was called in init_nfs_fs(), but its error\nhas been ignored since at least the initial commit 1da177e4c3f4\n(\"Linux-2.6.12-rc2\").\n\nRecently, commit d47151b79e32 (\"nfs: expose /proc/net/sunrpc/nfs\nin net namespaces\") converted the procfs to per-netns and made\nthe problem more visible.\n\nEven when rpc_proc_register() fails, nfs_net_init() could succeed,\nand thus nfs_net_exit() will be called while destroying the netns.\n\nThen, remove_proc_entry() will be called for non-existing proc\ndirectory and trigger the warning below.\n\nLet\u0027s handle the error of rpc_proc_register() properly in nfs_net_init().\n\n[0]:\nname \u0027nfs\u0027\nWARNING: CPU: 1 PID: 1710 at fs/proc/generic.c:711 remove_proc_entry+0x1bb/0x2d0 fs/proc/generic.c:711\nModules linked in:\nCPU: 1 PID: 1710 Comm: syz-executor.2 Not tainted 6.8.0-12822-gcd51db110a7e #12\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\nRIP: 0010:remove_proc_entry+0x1bb/0x2d0 fs/proc/generic.c:711\nCode: 41 5d 41 5e c3 e8 85 09 b5 ff 48 c7 c7 88 58 64 86 e8 09 0e 71 02 e8 74 09 b5 ff 4c 89 e6 48 c7 c7 de 1b 80 84 e8 c5 ad 97 ff \u003c0f\u003e 0b eb b1 e8 5c 09 b5 ff 48 c7 c7 88 58 64 86 e8 e0 0d 71 02 eb\nRSP: 0018:ffffc9000c6d7ce0 EFLAGS: 00010286\nRAX: 0000000000000000 RBX: ffff8880422b8b00 RCX: ffffffff8110503c\nRDX: ffff888030652f00 RSI: ffffffff81105045 RDI: 0000000000000001\nRBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000\nR10: 0000000000000001 R11: ffffffff81bb62cb R12: ffffffff84807ffc\nR13: ffff88804ad6fcc0 R14: ffffffff84807ffc R15: ffffffff85741ff8\nFS: 00007f30cfba8640(0000) GS:ffff88807dd00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007ff51afe8000 CR3: 000000005a60a005 CR4: 0000000000770ef0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nPKRU: 55555554\nCall Trace:\n \u003cTASK\u003e\n rpc_proc_unregister+0x64/0x70 net/sunrpc/stats.c:310\n nfs_net_exit+0x1c/0x30 fs/nfs/inode.c:2438\n ops_exit_list+0x62/0xb0 net/core/net_namespace.c:170\n setup_net+0x46c/0x660 net/core/net_namespace.c:372\n copy_net_ns+0x244/0x590 net/core/net_namespace.c:505\n create_new_namespaces+0x2ed/0x770 kernel/nsproxy.c:110\n unshare_nsproxy_namespaces+0xae/0x160 kernel/nsproxy.c:228\n ksys_unshare+0x342/0x760 kernel/fork.c:3322\n __do_sys_unshare kernel/fork.c:3393 [inline]\n __se_sys_unshare kernel/fork.c:3391 [inline]\n __x64_sys_unshare+0x1f/0x30 kernel/fork.c:3391\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0x4f/0x110 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x46/0x4e\nRIP: 0033:0x7f30d0febe5d\nCode: 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 73 9f 1b 00 f7 d8 64 89 01 48\nRSP: 002b:00007f30cfba7cc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110\nRAX: ffffffffffffffda RBX: 00000000004bbf80 RCX: 00007f30d0febe5d\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000006c020600\nRBP: 00000000004bbf80 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002\nR13: 000000000000000b R14: 00007f30d104c530 R15: 0000000000000000\n \u003c/TASK\u003e"
},
{
"lang": "es",
"value": "En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: nfs: Maneja el error de rpc_proc_register() en nfs_net_init(). syzkaller inform\u00f3 que se activ\u00f3 una advertencia [0] al destruir redes inmaduras. Se llam\u00f3 a rpc_proc_register() en init_nfs_fs(), pero su error se ignor\u00f3 al menos desde el commit inicial 1da177e4c3f4 (\"Linux-2.6.12-rc2\"). Recientemente, el commit d47151b79e32 (\"nfs: exponen /proc/net/sunrpc/nfs in net namespaces\") convirti\u00f3 los procfs a per-netns e hizo que el problema fuera m\u00e1s visible. Incluso cuando rpc_proc_register() falla, nfs_net_init() podr\u00eda tener \u00e9xito y, por lo tanto, se llamar\u00e1 a nfs_net_exit() mientras se destruyen las redes. Luego, se llamar\u00e1 a remove_proc_entry() para un directorio proc no existente y se activar\u00e1 la siguiente advertencia. Manejemos el error de rpc_proc_register() correctamente en nfs_net_init(). [0]: nombre \u0027nfs\u0027 ADVERTENCIA: CPU: 1 PID: 1710 en fs/proc/generic.c:711 remove_proc_entry+0x1bb/0x2d0 fs/proc/generic.c:711 M\u00f3dulos vinculados en: CPU: 1 PID: 1710 Comm: syz-executor.2 Not tainted 6.8.0-12822-gcd51db110a7e #12 Nombre del hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/ 01/2014 RIP: 0010:remove_proc_entry+0x1bb/0x2d0 fs/proc/generic.c:711 C\u00f3digo: 41 5d 41 5e c3 e8 85 09 b5 ff 48 c7 c7 88 58 64 86 e8 09 0e 71 02 e8 74 09 b5 ff 4c 89 e6 48 c7 c7 de 1b 80 84 e8 c5 ad 97 ff \u0026lt;0f\u0026gt; 0b eb b1 e8 5c 09 b5 ff 48 c7 c7 88 58 64 86 e8 e0 0d 71 02 eb RSP: 0018:ffffc9000c6d7ce0 EFLAGS: 10286 RAX: 0000000000000000 RBX: ffff8880422b8b00 RCX: ffffffff8110503c RDX: ffff888030652f00 RSI: ffffffff81105045 RDI: 0000000000000001 RBP: 0000000000000000 R08: 00000000 00000001 R09: 0000000000000000 R10: 0000000000000001 R11: ffffffff81bb62cb R12: ffffffff84807ffc R13: ffff88804ad6fcc0 R14: ffffffff84807ffc R15: 5741ff8 FS: 00007f30cfba8640(0000) GS: ffff88807dd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff51afe8000 CR3: 000000005a60a005 0000000000770ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000000000000 DR6: 00000000ffe0ff0 DR7: 000000400 PKRU: 55555554 Llamar Seguimiento: rpc_proc_unregister+0x64/0x70 net/sunrpc/stats.c:310 nfs_net_exit+0x1c/0x30 fs/nfs/inode.c:2438 ops_exit_list+0x62/0xb0 net/core/net_namespace.c:170 setup_net+0x46c /0x660 net/core/net_namespace.c:372 copy_net_ns+0x244/0x590 net/core/net_namespace.c:505 create_new_namespaces+0x2ed/0x770 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xae/0x160 kernel/nsproxy.c:228 ksys_unshare +0x342/0x760 kernel/fork.c:3322 __do_sys_unshare kernel/fork.c:3393 [en l\u00ednea] __se_sys_unshare kernel/fork.c:3391 [en l\u00ednea] __x64_sys_unshare+0x1f/0x30 kernel/fork.c:3391 do_syscall_x64 arch/x86/ entrada/common.c:52 [en l\u00ednea] do_syscall_64+0x4f/0x110 arch/x86/entry/common.c:83 entrada_SYSCALL_64_after_hwframe+0x46/0x4e RIP: 0033:0x7f30d0febe5d C\u00f3digo: ff c3 66 2e 0f 1f 84 00 00 0 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 \u0026lt;48\u0026gt; 3d 01 f0 ff ff 73 01 c3 48 8b 0d 73 9f 1b 00 f7 d8 64 89 01 48 RSP: 002b:00007f30cfba7cc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00000000004bbf80 RCX: 00007f30d0febe5d X: 0000000000000000 RSI: 0000000000000000 RDI: 000000006c020600 RBP: 00000000004bbf80 R08: 00000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000000b R14: 00007f30d104c530 R15: 0000000000000000 "
}
],
"id": "CVE-2024-36939",
"lastModified": "2026-06-17T07:37:24.503",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
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"source": "nvd@nist.gov",
"type": "Primary"
}
],
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{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"id": "CVE-2024-36939",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
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}
],
"role": "CISA Coordinator",
"timestamp": "2024-06-03T18:55:43.324430Z",
"version": "2.0.3"
}
}
]
},
"published": "2024-05-30T16:15:16.977",
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},
{
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}
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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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