CVE-2022-49153
Estado: ModificadaMedia (5.5)—
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:
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.
Detalles técnicos trazas, registros y código del informe original
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/0x30CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.26%
- Percentil entre todas las CVEs puntuadas: 16
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-401
- CWE-401
Referencias
- https://git.kernel.org/stable/c/096f9d35cac0a0c95ffafc00db84786b665a4837
- https://git.kernel.org/stable/c/0b19bcb753dbfb74710d12bb2761ec5ed706c726
- https://git.kernel.org/stable/c/402991a9771587acc2947cf6c4d689c5397f2258
- https://git.kernel.org/stable/c/bbbf962d9460194993ee1943a793a0a0af4a7fbf
- https://git.kernel.org/stable/c/ebcc492f4ba14bae54b898f1016a37b4282558d1
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwireguard: socket: free skb in send6 when ipv6 is disabled\n\nI got a memory leak report:\n\nunreferenced object 0xffff8881191fc040 (size 232):\n comm \"kworker/u17:0\", pid 23193, jiffies 4295238848 (age 3464.870s)\n hex dump (first 32 bytes):\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n backtrace:\n [<ffffffff814c3ef4>] slab_post_alloc_hook+0x84/0x3b0\n [<ffffffff814c8977>] kmem_cache_alloc_node+0x167/0x340\n [<ffffffff832974fb>] __alloc_skb+0x1db/0x200\n [<ffffffff82612b5d>] wg_socket_send_buffer_to_peer+0x3d/0xc0\n [<ffffffff8260e94a>] wg_packet_send_handshake_initiation+0xfa/0x110\n [<ffffffff8260ec81>] wg_packet_handshake_send_worker+0x21/0x30\n [<ffffffff8119c558>] process_one_work+0x2e8/0x770\n [<ffffffff8119ca2a>] worker_thread+0x4a/0x4b0\n [<ffffffff811a88e0>] kthread+0x120/0x160\n [<ffffffff8100242f>] ret_from_fork+0x1f/0x30\n\nIn function wg_socket_send_buffer_as_reply_to_skb() or wg_socket_send_\nbuffer_to_peer(), the semantics of send6() is required to free skb. But\nwhen CONFIG_IPV6 is disable, kfree_skb() is missing. This patch adds it\nto fix this bug."
},
{
"lang": "es",
"value": "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."
}
],
"lastModified": "2026-06-17T05:17:13.757",
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