CVE-2022-49087

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49087
In the Linux kernel, the following vulnerability has been resolved: rxrpc: fix a race in rxrpc_exit_net() Current code can lead to the following race: CPU0 CPU1 rxrpc_exit_net() rxrpc_peer_keepalive_worker() if (rxnet->live) rxnet->live = false; del_timer_sync(&rxnet->peer_keepalive_timer); timer_reduce(&rxnet->peer_keepalive_timer, jiffies + delay); cancel_work_sync(&rxnet->peer_keepalive_work); rxrpc_exit_net() exits while peer_keepalive_timer is still armed, leading to use-after-free. syzbot report was: ODEBUG: free active (active state 0) object type: timer_list hint: rxrpc_peer_keepalive_timeout+0x0/0xb0 WARNING: CPU: 0 PID: 3660 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Modules linked in: CPU: 0 PID: 3660 Comm: kworker/u4:6 Not tainted 5.17.0-syzkaller-13993-g88e6c0207623 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 00 1c 26 8a 4c 89 ee 48 c7 c7 00 10 26 8a e8 b1 e7 28 05 <0f> 0b 83 05 15 eb c5 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffc9000353fb00 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: ffff888029196140 RSI: ffffffff815efad8 RDI: fffff520006a7f52 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815ea4ae R11: 0000000000000000 R12: ffffffff89ce23e0 R13: ffffffff8a2614e0 R14: ffffffff816628c0 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe1f2908924 CR3: 0000000043720000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __debug_check_no_obj_freed lib/debugobjects.c:992 [inline] debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1023 kfree+0xd6/0x310 mm/slab.c:3809 ops_free_list.part.0+0x119/0x370 net/core/net_namespace.c:176 ops_free_list net/core/net_namespace.c:174 [inline] cleanup_net+0x591/0xb00 net/core/net_namespace.c:598 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 </TASK>

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/08ff0e74fab517dbc44e11b8bc683dd4ecc65950 Patch
https://git.kernel.org/stable/c/1946014ca3b19be9e485e780e862c375c6f98bad Patch
https://git.kernel.org/stable/c/41024a40f6c793abbb916a857f18fb009f07464c Patch
https://git.kernel.org/stable/c/571d8e1d154ca18f08dcb72b69318d36e10010a0 Patch
https://git.kernel.org/stable/c/7ee84d29f22de6f6c63fad6c54690517659862f1 Patch
https://git.kernel.org/stable/c/864297ee30727ae6233f80296b7fc91442620b05 Patch
https://git.kernel.org/stable/c/cd8aef1f30d1215648e4e6686cfb422004851429 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*
History

25 Mar 2025, 16:21

Type Values Removed Values Added
First Time Linux
Linux linux Kernel
References () https://git.kernel.org/stable/c/08ff0e74fab517dbc44e11b8bc683dd4ecc65950 - () https://git.kernel.org/stable/c/08ff0e74fab517dbc44e11b8bc683dd4ecc65950 - Patch
References () https://git.kernel.org/stable/c/1946014ca3b19be9e485e780e862c375c6f98bad - () https://git.kernel.org/stable/c/1946014ca3b19be9e485e780e862c375c6f98bad - Patch
References () https://git.kernel.org/stable/c/41024a40f6c793abbb916a857f18fb009f07464c - () https://git.kernel.org/stable/c/41024a40f6c793abbb916a857f18fb009f07464c - Patch
References () https://git.kernel.org/stable/c/571d8e1d154ca18f08dcb72b69318d36e10010a0 - () https://git.kernel.org/stable/c/571d8e1d154ca18f08dcb72b69318d36e10010a0 - Patch
References () https://git.kernel.org/stable/c/7ee84d29f22de6f6c63fad6c54690517659862f1 - () https://git.kernel.org/stable/c/7ee84d29f22de6f6c63fad6c54690517659862f1 - Patch
References () https://git.kernel.org/stable/c/864297ee30727ae6233f80296b7fc91442620b05 - () https://git.kernel.org/stable/c/864297ee30727ae6233f80296b7fc91442620b05 - Patch
References () https://git.kernel.org/stable/c/cd8aef1f30d1215648e4e6686cfb422004851429 - () https://git.kernel.org/stable/c/cd8aef1f30d1215648e4e6686cfb422004851429 - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*

27 Feb 2025, 19:15

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: rxrpc: se corrige una ejecución en rxrpc_exit_net() El código actual puede llevar a la siguiente ejecución: CPU0 CPU1 rxrpc_exit_net() rxrpc_peer_keepalive_worker() if (rxnet-&gt;live) rxnet-&gt;live = false; del_timer_sync(&amp;rxnet-&gt;peer_keepalive_timer); timer_reduce(&amp;rxnet-&gt;peer_keepalive_timer, jiffies + delay); cancel_work_sync(&amp;rxnet-&gt;peer_keepalive_work); rxrpc_exit_net() sale mientras peer_keepalive_timer todavía está armado, lo que lleva a un use-after-free. El informe de syzbot fue: ODEBUG: activo libre (estado activo 0) tipo de objeto: timer_list sugerencia: rxrpc_peer_keepalive_timeout+0x0/0xb0 ADVERTENCIA: CPU: 0 PID: 3660 en lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Módulos vinculados en: CPU: 0 PID: 3660 Comm: kworker/u4:6 No contaminado 5.17.0-syzkaller-13993-g88e6c0207623 #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Cola de trabajo: netns cleanup_net RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Código: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 00 1c 26 8a 4c 89 ee 48 c7 c7 00 10 26 8a e8 b1 e7 28 05 &lt;0f&gt; 0b 83 05 15 eb c5 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffc9000353fb00 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 00000000000000003 RCX: 0000000000000000 RDX: ffff888029196140 RSI: ffffffff815efad8 RDI: fffff520006a7f52 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815ea4ae R11: 0000000000000000 R12: ffffffff89ce23e0 R13: ffffffff8a2614e0 R14: ffffffff816628c0 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe1f2908924 CR3: 0000000043720000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 00000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Seguimiento de llamadas: __debug_check_no_obj_freed lib/debugobjects.c:992 [en línea] debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1023 kfree+0xd6/0x310 mm/slab.c:3809 ops_free_list.part.0+0x119/0x370 net/core/net_namespace.c:176 ops_free_list net/core/net_namespace.c:174 [en línea] cleanup_net+0x591/0xb00 net/core/net_namespace.c:598 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8
CWE CWE-416

26 Feb 2025, 07:00

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:00

Updated : 2025-03-25 16:21

NVD link : CVE-2022-49087

Mitre link : CVE-2022-49087

CVE.ORG link : CVE-2022-49087

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-416

Use After Free