CVE-2022-49153

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49153
In the Linux kernel, the following vulnerability has been resolved: wireguard: socket: free skb in send6 when ipv6 is disabled I got a memory leak report: unreferenced object 0xffff8881191fc040 (size 232): comm "kworker/u17:0", pid 23193, jiffies 4295238848 (age 3464.870s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffff814c3ef4>] slab_post_alloc_hook+0x84/0x3b0 [<ffffffff814c8977>] kmem_cache_alloc_node+0x167/0x340 [<ffffffff832974fb>] __alloc_skb+0x1db/0x200 [<ffffffff82612b5d>] wg_socket_send_buffer_to_peer+0x3d/0xc0 [<ffffffff8260e94a>] wg_packet_send_handshake_initiation+0xfa/0x110 [<ffffffff8260ec81>] wg_packet_handshake_send_worker+0x21/0x30 [<ffffffff8119c558>] process_one_work+0x2e8/0x770 [<ffffffff8119ca2a>] worker_thread+0x4a/0x4b0 [<ffffffff811a88e0>] kthread+0x120/0x160 [<ffffffff8100242f>] ret_from_fork+0x1f/0x30 In function wg_socket_send_buffer_as_reply_to_skb() or wg_socket_send_ buffer_to_peer(), the semantics of send6() is required to free skb. But when CONFIG_IPV6 is disable, kfree_skb() is missing. This patch adds it to fix this bug.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/096f9d35cac0a0c95ffafc00db84786b665a4837 Patch
https://git.kernel.org/stable/c/0b19bcb753dbfb74710d12bb2761ec5ed706c726 Patch
https://git.kernel.org/stable/c/402991a9771587acc2947cf6c4d689c5397f2258 Patch
https://git.kernel.org/stable/c/bbbf962d9460194993ee1943a793a0a0af4a7fbf Patch
https://git.kernel.org/stable/c/ebcc492f4ba14bae54b898f1016a37b4282558d1 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:*:*:*:*:*:*:*:*
History

13 Mar 2025, 21:59

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wireguard: socket: skb libre en send6 cuando ipv6 está deshabilitado Recibí un informe de pérdida de memoria: objeto sin referencia 0xffff8881191fc040 (tamaño 232): comm "kworker/u17:0", pid 23193, jiffies 4295238848 (edad 3464.870s) volcado hexadecimal (primeros 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [] slab_post_alloc_hook+0x84/0x3b0 [] kmem_cache_alloc_node+0x167/0x340 [] __alloc_skb+0x1db/0x200 [] wg_socket_send_buffer_to_peer+0x3d/0xc0 [] wg_packet_send_handshake_initiation+0xfa/0x110 [] wg_packet_handshake_send_worker+0x21/0x30 [] process_one_work+0x2e8/0x770 [] worker_thread+0x4a/0x4b0 [] kthread+0x120/0x160 [] ret_from_fork+0x1f/0x30 En la función wg_socket_send_buffer_as_reply_to_skb() o wg_socket_send_buffer_to_peer(), se requiere la semántica de send6() para liberar skb. Pero cuando CONFIG_IPV6 está deshabilitado, falta kfree_skb(). Este parche lo agrega para corregir este error.
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE CWE-401
First Time Linux
Linux linux Kernel
References () https://git.kernel.org/stable/c/096f9d35cac0a0c95ffafc00db84786b665a4837 - () https://git.kernel.org/stable/c/096f9d35cac0a0c95ffafc00db84786b665a4837 - Patch
References () https://git.kernel.org/stable/c/0b19bcb753dbfb74710d12bb2761ec5ed706c726 - () https://git.kernel.org/stable/c/0b19bcb753dbfb74710d12bb2761ec5ed706c726 - Patch
References () https://git.kernel.org/stable/c/402991a9771587acc2947cf6c4d689c5397f2258 - () https://git.kernel.org/stable/c/402991a9771587acc2947cf6c4d689c5397f2258 - Patch
References () https://git.kernel.org/stable/c/bbbf962d9460194993ee1943a793a0a0af4a7fbf - () https://git.kernel.org/stable/c/bbbf962d9460194993ee1943a793a0a0af4a7fbf - Patch
References () https://git.kernel.org/stable/c/ebcc492f4ba14bae54b898f1016a37b4282558d1 - () https://git.kernel.org/stable/c/ebcc492f4ba14bae54b898f1016a37b4282558d1 - Patch

26 Feb 2025, 07:00

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:00

Updated : 2025-03-13 21:59

NVD link : CVE-2022-49153

Mitre link : CVE-2022-49153

CVE.ORG link : CVE-2022-49153

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-401

Missing Release of Memory after Effective Lifetime