gsd-2024-26782
Vulnerability from gsd
Modified
2024-02-20 06:02
Details
In the Linux kernel, the following vulnerability has been resolved:
mptcp: fix double-free on socket dismantle
when MPTCP server accepts an incoming connection, it clones its listener
socket. However, the pointer to 'inet_opt' for the new socket has the same
value as the original one: as a consequence, on program exit it's possible
to observe the following splat:
BUG: KASAN: double-free in inet_sock_destruct+0x54f/0x8b0
Free of addr ffff888485950880 by task swapper/25/0
CPU: 25 PID: 0 Comm: swapper/25 Kdump: loaded Not tainted 6.8.0-rc1+ #609
Hardware name: Supermicro SYS-6027R-72RF/X9DRH-7TF/7F/iTF/iF, BIOS 3.0 07/26/2013
Call Trace:
<IRQ>
dump_stack_lvl+0x32/0x50
print_report+0xca/0x620
kasan_report_invalid_free+0x64/0x90
__kasan_slab_free+0x1aa/0x1f0
kfree+0xed/0x2e0
inet_sock_destruct+0x54f/0x8b0
__sk_destruct+0x48/0x5b0
rcu_do_batch+0x34e/0xd90
rcu_core+0x559/0xac0
__do_softirq+0x183/0x5a4
irq_exit_rcu+0x12d/0x170
sysvec_apic_timer_interrupt+0x6b/0x80
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20
RIP: 0010:cpuidle_enter_state+0x175/0x300
Code: 30 00 0f 84 1f 01 00 00 83 e8 01 83 f8 ff 75 e5 48 83 c4 18 44 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc fb 45 85 ed <0f> 89 60 ff ff ff 48 c1 e5 06 48 c7 43 18 00 00 00 00 48 83 44 2b
RSP: 0018:ffff888481cf7d90 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffff88887facddc8 RCX: 0000000000000000
RDX: 1ffff1110ff588b1 RSI: 0000000000000019 RDI: ffff88887fac4588
RBP: 0000000000000004 R08: 0000000000000002 R09: 0000000000043080
R10: 0009b02ea273363f R11: ffff88887fabf42b R12: ffffffff932592e0
R13: 0000000000000004 R14: 0000000000000000 R15: 00000022c880ec80
cpuidle_enter+0x4a/0xa0
do_idle+0x310/0x410
cpu_startup_entry+0x51/0x60
start_secondary+0x211/0x270
secondary_startup_64_no_verify+0x184/0x18b
</TASK>
Allocated by task 6853:
kasan_save_stack+0x1c/0x40
kasan_save_track+0x10/0x30
__kasan_kmalloc+0xa6/0xb0
__kmalloc+0x1eb/0x450
cipso_v4_sock_setattr+0x96/0x360
netlbl_sock_setattr+0x132/0x1f0
selinux_netlbl_socket_post_create+0x6c/0x110
selinux_socket_post_create+0x37b/0x7f0
security_socket_post_create+0x63/0xb0
__sock_create+0x305/0x450
__sys_socket_create.part.23+0xbd/0x130
__sys_socket+0x37/0xb0
__x64_sys_socket+0x6f/0xb0
do_syscall_64+0x83/0x160
entry_SYSCALL_64_after_hwframe+0x6e/0x76
Freed by task 6858:
kasan_save_stack+0x1c/0x40
kasan_save_track+0x10/0x30
kasan_save_free_info+0x3b/0x60
__kasan_slab_free+0x12c/0x1f0
kfree+0xed/0x2e0
inet_sock_destruct+0x54f/0x8b0
__sk_destruct+0x48/0x5b0
subflow_ulp_release+0x1f0/0x250
tcp_cleanup_ulp+0x6e/0x110
tcp_v4_destroy_sock+0x5a/0x3a0
inet_csk_destroy_sock+0x135/0x390
tcp_fin+0x416/0x5c0
tcp_data_queue+0x1bc8/0x4310
tcp_rcv_state_process+0x15a3/0x47b0
tcp_v4_do_rcv+0x2c1/0x990
tcp_v4_rcv+0x41fb/0x5ed0
ip_protocol_deliver_rcu+0x6d/0x9f0
ip_local_deliver_finish+0x278/0x360
ip_local_deliver+0x182/0x2c0
ip_rcv+0xb5/0x1c0
__netif_receive_skb_one_core+0x16e/0x1b0
process_backlog+0x1e3/0x650
__napi_poll+0xa6/0x500
net_rx_action+0x740/0xbb0
__do_softirq+0x183/0x5a4
The buggy address belongs to the object at ffff888485950880
which belongs to the cache kmalloc-64 of size 64
The buggy address is located 0 bytes inside of
64-byte region [ffff888485950880, ffff8884859508c0)
The buggy address belongs to the physical page:
page:0000000056d1e95e refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888485950700 pfn:0x485950
flags: 0x57ffffc0000800(slab|node=1|zone=2|lastcpupid=0x1fffff)
page_type: 0xffffffff()
raw: 0057ffffc0000800 ffff88810004c640 ffffea00121b8ac0 dead000000000006
raw: ffff888485950700 0000000000200019 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888485950780: fa fb fb
---truncated---
Aliases
{ "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2024-26782" ], "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: fix double-free on socket dismantle\n\nwhen MPTCP server accepts an incoming connection, it clones its listener\nsocket. However, the pointer to \u0027inet_opt\u0027 for the new socket has the same\nvalue as the original one: as a consequence, on program exit it\u0027s possible\nto observe the following splat:\n\n BUG: KASAN: double-free in inet_sock_destruct+0x54f/0x8b0\n Free of addr ffff888485950880 by task swapper/25/0\n\n CPU: 25 PID: 0 Comm: swapper/25 Kdump: loaded Not tainted 6.8.0-rc1+ #609\n Hardware name: Supermicro SYS-6027R-72RF/X9DRH-7TF/7F/iTF/iF, BIOS 3.0 07/26/2013\n Call Trace:\n \u003cIRQ\u003e\n dump_stack_lvl+0x32/0x50\n print_report+0xca/0x620\n kasan_report_invalid_free+0x64/0x90\n __kasan_slab_free+0x1aa/0x1f0\n kfree+0xed/0x2e0\n inet_sock_destruct+0x54f/0x8b0\n __sk_destruct+0x48/0x5b0\n rcu_do_batch+0x34e/0xd90\n rcu_core+0x559/0xac0\n __do_softirq+0x183/0x5a4\n irq_exit_rcu+0x12d/0x170\n sysvec_apic_timer_interrupt+0x6b/0x80\n \u003c/IRQ\u003e\n \u003cTASK\u003e\n asm_sysvec_apic_timer_interrupt+0x16/0x20\n RIP: 0010:cpuidle_enter_state+0x175/0x300\n Code: 30 00 0f 84 1f 01 00 00 83 e8 01 83 f8 ff 75 e5 48 83 c4 18 44 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc fb 45 85 ed \u003c0f\u003e 89 60 ff ff ff 48 c1 e5 06 48 c7 43 18 00 00 00 00 48 83 44 2b\n RSP: 0018:ffff888481cf7d90 EFLAGS: 00000202\n RAX: 0000000000000000 RBX: ffff88887facddc8 RCX: 0000000000000000\n RDX: 1ffff1110ff588b1 RSI: 0000000000000019 RDI: ffff88887fac4588\n RBP: 0000000000000004 R08: 0000000000000002 R09: 0000000000043080\n R10: 0009b02ea273363f R11: ffff88887fabf42b R12: ffffffff932592e0\n R13: 0000000000000004 R14: 0000000000000000 R15: 00000022c880ec80\n cpuidle_enter+0x4a/0xa0\n do_idle+0x310/0x410\n cpu_startup_entry+0x51/0x60\n start_secondary+0x211/0x270\n secondary_startup_64_no_verify+0x184/0x18b\n \u003c/TASK\u003e\n\n Allocated by task 6853:\n kasan_save_stack+0x1c/0x40\n kasan_save_track+0x10/0x30\n __kasan_kmalloc+0xa6/0xb0\n __kmalloc+0x1eb/0x450\n cipso_v4_sock_setattr+0x96/0x360\n netlbl_sock_setattr+0x132/0x1f0\n selinux_netlbl_socket_post_create+0x6c/0x110\n selinux_socket_post_create+0x37b/0x7f0\n security_socket_post_create+0x63/0xb0\n __sock_create+0x305/0x450\n __sys_socket_create.part.23+0xbd/0x130\n __sys_socket+0x37/0xb0\n __x64_sys_socket+0x6f/0xb0\n do_syscall_64+0x83/0x160\n entry_SYSCALL_64_after_hwframe+0x6e/0x76\n\n Freed by task 6858:\n kasan_save_stack+0x1c/0x40\n kasan_save_track+0x10/0x30\n kasan_save_free_info+0x3b/0x60\n __kasan_slab_free+0x12c/0x1f0\n kfree+0xed/0x2e0\n inet_sock_destruct+0x54f/0x8b0\n __sk_destruct+0x48/0x5b0\n subflow_ulp_release+0x1f0/0x250\n tcp_cleanup_ulp+0x6e/0x110\n tcp_v4_destroy_sock+0x5a/0x3a0\n inet_csk_destroy_sock+0x135/0x390\n tcp_fin+0x416/0x5c0\n tcp_data_queue+0x1bc8/0x4310\n tcp_rcv_state_process+0x15a3/0x47b0\n tcp_v4_do_rcv+0x2c1/0x990\n tcp_v4_rcv+0x41fb/0x5ed0\n ip_protocol_deliver_rcu+0x6d/0x9f0\n ip_local_deliver_finish+0x278/0x360\n ip_local_deliver+0x182/0x2c0\n ip_rcv+0xb5/0x1c0\n __netif_receive_skb_one_core+0x16e/0x1b0\n process_backlog+0x1e3/0x650\n __napi_poll+0xa6/0x500\n net_rx_action+0x740/0xbb0\n __do_softirq+0x183/0x5a4\n\n The buggy address belongs to the object at ffff888485950880\n which belongs to the cache kmalloc-64 of size 64\n The buggy address is located 0 bytes inside of\n 64-byte region [ffff888485950880, ffff8884859508c0)\n\n The buggy address belongs to the physical page:\n page:0000000056d1e95e refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888485950700 pfn:0x485950\n flags: 0x57ffffc0000800(slab|node=1|zone=2|lastcpupid=0x1fffff)\n page_type: 0xffffffff()\n raw: 0057ffffc0000800 ffff88810004c640 ffffea00121b8ac0 dead000000000006\n raw: ffff888485950700 0000000000200019 00000001ffffffff 0000000000000000\n page dumped because: kasan: bad access detected\n\n Memory state around the buggy address:\n ffff888485950780: fa fb fb\n---truncated---", "id": "GSD-2024-26782", "modified": "2024-02-20T06:02:29.154078Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "cve@kernel.org", "ID": "CVE-2024-26782", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Linux", "version": { "version_data": [ { "version_affected": "\u003c", "version_name": "cf7da0d66cc1", "version_value": "f74362a00422" }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "affected", "versions": [ { "status": "affected", "version": "5.6" }, { "lessThan": "5.6", "status": "unaffected", "version": "0", "versionType": "custom" }, { "lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.212", "versionType": "custom" }, { "lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.151", "versionType": "custom" }, { "lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.81", "versionType": "custom" }, { "lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.21", "versionType": "custom" }, { "lessThanOrEqual": "6.7.*", "status": "unaffected", "version": "6.7.9", "versionType": "custom" }, { "lessThanOrEqual": "*", "status": "unaffected", "version": "6.8", "versionType": "original_commit_for_fix" } ] } } ] } } ] }, "vendor_name": "Linux" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: fix double-free on socket dismantle\n\nwhen MPTCP server accepts an incoming connection, it clones its listener\nsocket. However, the pointer to \u0027inet_opt\u0027 for the new socket has the same\nvalue as the original one: as a consequence, on program exit it\u0027s possible\nto observe the following splat:\n\n BUG: KASAN: double-free in inet_sock_destruct+0x54f/0x8b0\n Free of addr ffff888485950880 by task swapper/25/0\n\n CPU: 25 PID: 0 Comm: swapper/25 Kdump: loaded Not tainted 6.8.0-rc1+ #609\n Hardware name: Supermicro SYS-6027R-72RF/X9DRH-7TF/7F/iTF/iF, BIOS 3.0 07/26/2013\n Call Trace:\n \u003cIRQ\u003e\n dump_stack_lvl+0x32/0x50\n print_report+0xca/0x620\n kasan_report_invalid_free+0x64/0x90\n __kasan_slab_free+0x1aa/0x1f0\n kfree+0xed/0x2e0\n inet_sock_destruct+0x54f/0x8b0\n __sk_destruct+0x48/0x5b0\n rcu_do_batch+0x34e/0xd90\n rcu_core+0x559/0xac0\n __do_softirq+0x183/0x5a4\n irq_exit_rcu+0x12d/0x170\n sysvec_apic_timer_interrupt+0x6b/0x80\n \u003c/IRQ\u003e\n \u003cTASK\u003e\n asm_sysvec_apic_timer_interrupt+0x16/0x20\n RIP: 0010:cpuidle_enter_state+0x175/0x300\n Code: 30 00 0f 84 1f 01 00 00 83 e8 01 83 f8 ff 75 e5 48 83 c4 18 44 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc fb 45 85 ed \u003c0f\u003e 89 60 ff ff ff 48 c1 e5 06 48 c7 43 18 00 00 00 00 48 83 44 2b\n RSP: 0018:ffff888481cf7d90 EFLAGS: 00000202\n RAX: 0000000000000000 RBX: ffff88887facddc8 RCX: 0000000000000000\n RDX: 1ffff1110ff588b1 RSI: 0000000000000019 RDI: ffff88887fac4588\n RBP: 0000000000000004 R08: 0000000000000002 R09: 0000000000043080\n R10: 0009b02ea273363f R11: ffff88887fabf42b R12: ffffffff932592e0\n R13: 0000000000000004 R14: 0000000000000000 R15: 00000022c880ec80\n cpuidle_enter+0x4a/0xa0\n do_idle+0x310/0x410\n cpu_startup_entry+0x51/0x60\n start_secondary+0x211/0x270\n secondary_startup_64_no_verify+0x184/0x18b\n \u003c/TASK\u003e\n\n Allocated by task 6853:\n kasan_save_stack+0x1c/0x40\n kasan_save_track+0x10/0x30\n __kasan_kmalloc+0xa6/0xb0\n __kmalloc+0x1eb/0x450\n cipso_v4_sock_setattr+0x96/0x360\n netlbl_sock_setattr+0x132/0x1f0\n selinux_netlbl_socket_post_create+0x6c/0x110\n selinux_socket_post_create+0x37b/0x7f0\n security_socket_post_create+0x63/0xb0\n __sock_create+0x305/0x450\n __sys_socket_create.part.23+0xbd/0x130\n __sys_socket+0x37/0xb0\n __x64_sys_socket+0x6f/0xb0\n do_syscall_64+0x83/0x160\n entry_SYSCALL_64_after_hwframe+0x6e/0x76\n\n Freed by task 6858:\n kasan_save_stack+0x1c/0x40\n kasan_save_track+0x10/0x30\n kasan_save_free_info+0x3b/0x60\n __kasan_slab_free+0x12c/0x1f0\n kfree+0xed/0x2e0\n inet_sock_destruct+0x54f/0x8b0\n __sk_destruct+0x48/0x5b0\n subflow_ulp_release+0x1f0/0x250\n tcp_cleanup_ulp+0x6e/0x110\n tcp_v4_destroy_sock+0x5a/0x3a0\n inet_csk_destroy_sock+0x135/0x390\n tcp_fin+0x416/0x5c0\n tcp_data_queue+0x1bc8/0x4310\n tcp_rcv_state_process+0x15a3/0x47b0\n tcp_v4_do_rcv+0x2c1/0x990\n tcp_v4_rcv+0x41fb/0x5ed0\n ip_protocol_deliver_rcu+0x6d/0x9f0\n ip_local_deliver_finish+0x278/0x360\n ip_local_deliver+0x182/0x2c0\n ip_rcv+0xb5/0x1c0\n __netif_receive_skb_one_core+0x16e/0x1b0\n process_backlog+0x1e3/0x650\n __napi_poll+0xa6/0x500\n net_rx_action+0x740/0xbb0\n __do_softirq+0x183/0x5a4\n\n The buggy address belongs to the object at ffff888485950880\n which belongs to the cache kmalloc-64 of size 64\n The buggy address is located 0 bytes inside of\n 64-byte region [ffff888485950880, ffff8884859508c0)\n\n The buggy address belongs to the physical page:\n page:0000000056d1e95e refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888485950700 pfn:0x485950\n flags: 0x57ffffc0000800(slab|node=1|zone=2|lastcpupid=0x1fffff)\n page_type: 0xffffffff()\n raw: 0057ffffc0000800 ffff88810004c640 ffffea00121b8ac0 dead000000000006\n raw: ffff888485950700 0000000000200019 00000001ffffffff 0000000000000000\n page dumped because: kasan: bad access detected\n\n Memory state around the buggy address:\n ffff888485950780: fa fb fb\n---truncated---" } ] }, "generator": { "engine": "bippy-e0c11145c45e" }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "references": { "reference_data": [ { "name": "https://git.kernel.org/stable/c/f74362a004225df935863dea6eb7d82daaa5b16e", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/f74362a004225df935863dea6eb7d82daaa5b16e" }, { "name": "https://git.kernel.org/stable/c/4a4eeb6912538c2d0b158e8d11b62d96c1dada4e", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/4a4eeb6912538c2d0b158e8d11b62d96c1dada4e" }, { "name": "https://git.kernel.org/stable/c/d93fd40c62397326046902a2c5cb75af50882a85", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/d93fd40c62397326046902a2c5cb75af50882a85" }, { "name": "https://git.kernel.org/stable/c/ce0809ada38dca8d6d41bb57ab40494855c30582", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/ce0809ada38dca8d6d41bb57ab40494855c30582" }, { "name": "https://git.kernel.org/stable/c/85933e80d077c9ae2227226beb86c22f464059cc", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/85933e80d077c9ae2227226beb86c22f464059cc" }, { "name": "https://git.kernel.org/stable/c/10048689def7e40a4405acda16fdc6477d4ecc5c", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/10048689def7e40a4405acda16fdc6477d4ecc5c" } ] } }, "nvd.nist.gov": { "cve": { "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: fix double-free on socket dismantle\n\nwhen MPTCP server accepts an incoming connection, it clones its listener\nsocket. However, the pointer to \u0027inet_opt\u0027 for the new socket has the same\nvalue as the original one: as a consequence, on program exit it\u0027s possible\nto observe the following splat:\n\n BUG: KASAN: double-free in inet_sock_destruct+0x54f/0x8b0\n Free of addr ffff888485950880 by task swapper/25/0\n\n CPU: 25 PID: 0 Comm: swapper/25 Kdump: loaded Not tainted 6.8.0-rc1+ #609\n Hardware name: Supermicro SYS-6027R-72RF/X9DRH-7TF/7F/iTF/iF, BIOS 3.0 07/26/2013\n Call Trace:\n \u003cIRQ\u003e\n dump_stack_lvl+0x32/0x50\n print_report+0xca/0x620\n kasan_report_invalid_free+0x64/0x90\n __kasan_slab_free+0x1aa/0x1f0\n kfree+0xed/0x2e0\n inet_sock_destruct+0x54f/0x8b0\n __sk_destruct+0x48/0x5b0\n rcu_do_batch+0x34e/0xd90\n rcu_core+0x559/0xac0\n __do_softirq+0x183/0x5a4\n irq_exit_rcu+0x12d/0x170\n sysvec_apic_timer_interrupt+0x6b/0x80\n \u003c/IRQ\u003e\n \u003cTASK\u003e\n asm_sysvec_apic_timer_interrupt+0x16/0x20\n RIP: 0010:cpuidle_enter_state+0x175/0x300\n Code: 30 00 0f 84 1f 01 00 00 83 e8 01 83 f8 ff 75 e5 48 83 c4 18 44 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc fb 45 85 ed \u003c0f\u003e 89 60 ff ff ff 48 c1 e5 06 48 c7 43 18 00 00 00 00 48 83 44 2b\n RSP: 0018:ffff888481cf7d90 EFLAGS: 00000202\n RAX: 0000000000000000 RBX: ffff88887facddc8 RCX: 0000000000000000\n RDX: 1ffff1110ff588b1 RSI: 0000000000000019 RDI: ffff88887fac4588\n RBP: 0000000000000004 R08: 0000000000000002 R09: 0000000000043080\n R10: 0009b02ea273363f R11: ffff88887fabf42b R12: ffffffff932592e0\n R13: 0000000000000004 R14: 0000000000000000 R15: 00000022c880ec80\n cpuidle_enter+0x4a/0xa0\n do_idle+0x310/0x410\n cpu_startup_entry+0x51/0x60\n start_secondary+0x211/0x270\n secondary_startup_64_no_verify+0x184/0x18b\n \u003c/TASK\u003e\n\n Allocated by task 6853:\n kasan_save_stack+0x1c/0x40\n kasan_save_track+0x10/0x30\n __kasan_kmalloc+0xa6/0xb0\n __kmalloc+0x1eb/0x450\n cipso_v4_sock_setattr+0x96/0x360\n netlbl_sock_setattr+0x132/0x1f0\n selinux_netlbl_socket_post_create+0x6c/0x110\n selinux_socket_post_create+0x37b/0x7f0\n security_socket_post_create+0x63/0xb0\n __sock_create+0x305/0x450\n __sys_socket_create.part.23+0xbd/0x130\n __sys_socket+0x37/0xb0\n __x64_sys_socket+0x6f/0xb0\n do_syscall_64+0x83/0x160\n entry_SYSCALL_64_after_hwframe+0x6e/0x76\n\n Freed by task 6858:\n kasan_save_stack+0x1c/0x40\n kasan_save_track+0x10/0x30\n kasan_save_free_info+0x3b/0x60\n __kasan_slab_free+0x12c/0x1f0\n kfree+0xed/0x2e0\n inet_sock_destruct+0x54f/0x8b0\n __sk_destruct+0x48/0x5b0\n subflow_ulp_release+0x1f0/0x250\n tcp_cleanup_ulp+0x6e/0x110\n tcp_v4_destroy_sock+0x5a/0x3a0\n inet_csk_destroy_sock+0x135/0x390\n tcp_fin+0x416/0x5c0\n tcp_data_queue+0x1bc8/0x4310\n tcp_rcv_state_process+0x15a3/0x47b0\n tcp_v4_do_rcv+0x2c1/0x990\n tcp_v4_rcv+0x41fb/0x5ed0\n ip_protocol_deliver_rcu+0x6d/0x9f0\n ip_local_deliver_finish+0x278/0x360\n ip_local_deliver+0x182/0x2c0\n ip_rcv+0xb5/0x1c0\n __netif_receive_skb_one_core+0x16e/0x1b0\n process_backlog+0x1e3/0x650\n __napi_poll+0xa6/0x500\n net_rx_action+0x740/0xbb0\n __do_softirq+0x183/0x5a4\n\n The buggy address belongs to the object at ffff888485950880\n which belongs to the cache kmalloc-64 of size 64\n The buggy address is located 0 bytes inside of\n 64-byte region [ffff888485950880, ffff8884859508c0)\n\n The buggy address belongs to the physical page:\n page:0000000056d1e95e refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888485950700 pfn:0x485950\n flags: 0x57ffffc0000800(slab|node=1|zone=2|lastcpupid=0x1fffff)\n page_type: 0xffffffff()\n raw: 0057ffffc0000800 ffff88810004c640 ffffea00121b8ac0 dead000000000006\n raw: ffff888485950700 0000000000200019 00000001ffffffff 0000000000000000\n page dumped because: kasan: bad access detected\n\n Memory state around the buggy address:\n ffff888485950780: fa fb fb\n---truncated---" }, { "lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mptcp: corrige la doble liberaci\u00f3n al desmantelar el socket cuando el servidor MPTCP acepta una conexi\u00f3n entrante, clona su socket de escucha. Sin embargo, el puntero a \u0027inet_opt\u0027 para el nuevo socket tiene el mismo valor que el original: como consecuencia, al salir del programa es posible observar el siguiente s\u00edmbolo: ERROR: KASAN: double-free in inet_sock_destruct+0x54f/0x8b0 Free de addr ffff888485950880 por task swapper/25/0 CPU: 25 PID: 0 Comm: swapper/25 Kdump: cargado No contaminado 6.8.0-rc1+ #609 Nombre de hardware: Supermicro SYS-6027R-72RF/X9DRH-7TF/7F/iTF /iF, BIOS 3.0 26/07/2013 Seguimiento de llamadas: dump_stack_lvl+0x32/0x50 print_report+0xca/0x620 kasan_report_invalid_free+0x64/0x90 __kasan_slab_free+0x1aa/0x1f0 kfree+0xed/0x2e0 inet_sock_destruct+0x 54f/0x8b0 __sk_destruct+0x48/ 0x5b0 rcu_do_batch+0x34e/0xd90 rcu_core+0x559/0xac0 __do_softirq+0x183/0x5a4 irq_exit_rcu+0x12d/0x170 sysvec_apic_timer_interrupt+0x6b/0x80 asm_sysvec_apic _timer_interrupt+0x16/0x20 RIP: 0010:cpuidle_enter_state+0x175/0x300 C\u00f3digo: 30 00 0f 84 1f 01 00 00 83 e8 01 83 f8 ff 75 e5 48 83 c4 18 44 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc fb 45 85 ed \u0026lt;0f\u0026gt; 89 60 ff ff ff 48 c1 e5 06 48 c7 43 18 00 00 00 00 48 83 44 2b RSP: 0018:ffff888481cf7d90 EFLAGS: 00000202 RAX: 00000000000000000 RBX: ffff88887facddc8 RCX: 00000 00000000000 RDX: 1ffff1110ff588b1 RSI: 0000000000000019 RDI: ffff88887fac4588 RBP: 00000000000000004 R08: 0000000000000002 R09: 0000000000043 080 R10: 0009b02ea273363f R11: ffff88887fabf42b R12: ffffffff932592e0 R13: 0000000000000004 R14: 00000000000000000 R15: 00000022c880ec80 cpuidle_enter+ 0x4a/0xa0 do_idle+0x310/0x410 cpu_startup_entry+0x51/0x60 start_secondary+0x211/0x270 second_startup_64_no_verify+0x184/0x18b Asignado por tarea 6853: kasan_save_stack+0x1c/0x40 kasan_save_track+0x10/0x30 __kasan_kmalloc+0xa6/0xb0 __kmalloc+0x1eb/0x450 cipso_v4_sock_setattr+0x96/0x360 netlbl_sock_setattr+0x132/0x1f0 selinux_net lbl_socket_post_create+0x6c/0x110 selinux_socket_post_create+0x37b/0x7f0 seguridad_socket_post_create+0x63/0xb0 __sock_create+0x305 /0x450 __sys_socket_create.part.23+0xbd/0x130 __sys_socket+0x37/0xb0 __x64_sys_socket+0x6f/0xb0 do_syscall_64+0x83/0x160 Entry_SYSCALL_64_after_hwframe+0x6e/0x76 Liberado por la tarea 68 58: kasan_save_stack+0x1c/0x40 kasan_save_track+0x10/0x30 kasan_save_free_info+0x3b/ 0x60 __kasan_slab_free+0x12c/0x1f0 kfree+0xed/0x2e0 inet_sock_destruct+0x54f/0x8b0 __sk_destruct+0x48/0x5b0 subflow_ulp_release+0x1f0/0x250 tcp_cleanup_ulp+0x6e/0x110 tcp_v4_destroy _sock+0x5a/0x3a0 inet_csk_destroy_sock+0x135/0x390 tcp_fin+0x416/0x5c0 tcp_data_queue+0x1bc8/ 0x4310 tcp_rcv_state_process+0x15a3/0x47b0 tcp_v4_do_rcv+0x2c1/0x990 tcp_v4_rcv+0x41fb/0x5ed0 ip_protocol_deliver_rcu+0x6d/0x9f0 ip_local_deliver_finish+0x278/0x360 ip_ local_deliver+0x182/0x2c0 ip_rcv+0xb5/0x1c0 __netif_receive_skb_one_core+0x16e/0x1b0 Process_backlog+0x1e3/0x650 __napi_poll+0xa6/ 0x500 net_rx_action+0x740/0xbb0 __do_softirq+0x183/0x5a4 La direcci\u00f3n con errores pertenece al objeto en ffff888485950880 que pertenece al cach\u00e9 kmalloc-64 de tama\u00f1o 64. La direcci\u00f3n con errores se encuentra a 0 bytes dentro de la regi\u00f3n de 64 bytes [ffff888485950880, ffff88848 59508c0) El La direcci\u00f3n con errores pertenece a la p\u00e1gina f\u00edsica: p\u00e1gina:0000000056d1e95e refcount:1 mapcount:0 mapeo:0000000000000000 \u00edndice:0xffff888485950700 pfn:0x485950 banderas: 0x57ffffc0000800(slab|node=1|zone=2|lastcpupid=0x1f ffff) tipo_p\u00e1gina: 0xffffffff() sin procesar : 0057ffffc0000800 ffff88810004c640 ffffea00121b8ac0 dead000000000006 raw: ffff888485950700 0000000000200019 00000001ffffffff 0000000000000000 p\u00e1gina volcada porque: kasan: se detect\u00f3 mal acceso Estado de la memoria alrededor de la direcci\u00f3n con errores: ffff888485950780: fa fb fb ---truncado---" } ], "id": "CVE-2024-26782", "lastModified": "2024-04-04T12:48:41.700", "metrics": {}, "published": "2024-04-04T09:15:08.020", "references": [ { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/10048689def7e40a4405acda16fdc6477d4ecc5c" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4a4eeb6912538c2d0b158e8d11b62d96c1dada4e" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/85933e80d077c9ae2227226beb86c22f464059cc" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ce0809ada38dca8d6d41bb57ab40494855c30582" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d93fd40c62397326046902a2c5cb75af50882a85" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f74362a004225df935863dea6eb7d82daaa5b16e" } ], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis" } } } }
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.