CVE-2022-49418

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49418
In the Linux kernel, the following vulnerability has been resolved: NFSv4: Fix free of uninitialized nfs4_label on referral lookup. Send along the already-allocated fattr along with nfs4_fs_locations, and drop the memcpy of fattr. We end up growing two more allocations, but this fixes up a crash as: PID: 790 TASK: ffff88811b43c000 CPU: 0 COMMAND: "ls" #0 [ffffc90000857920] panic at ffffffff81b9bfde #1 [ffffc900008579c0] do_trap at ffffffff81023a9b #2 [ffffc90000857a10] do_error_trap at ffffffff81023b78 #3 [ffffc90000857a58] exc_stack_segment at ffffffff81be1f45 #4 [ffffc90000857a80] asm_exc_stack_segment at ffffffff81c009de #5 [ffffc90000857b08] nfs_lookup at ffffffffa0302322 [nfs] #6 [ffffc90000857b70] __lookup_slow at ffffffff813a4a5f #7 [ffffc90000857c60] walk_component at ffffffff813a86c4 #8 [ffffc90000857cb8] path_lookupat at ffffffff813a9553 #9 [ffffc90000857cf0] filename_lookup at ffffffff813ab86b

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/6015292653d95ba9f72906e2b65e536aa5807d64 Patch
https://git.kernel.org/stable/c/c3ed222745d9ad7b69299b349a64ba533c64a34f Patch
Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

22 Sep 2025, 20:01

Type Values Removed Values Added
CWE CWE-908
First Time Linux
Linux linux Kernel
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/6015292653d95ba9f72906e2b65e536aa5807d64 - () https://git.kernel.org/stable/c/6015292653d95ba9f72906e2b65e536aa5807d64 - Patch
References () https://git.kernel.org/stable/c/c3ed222745d9ad7b69299b349a64ba533c64a34f - () https://git.kernel.org/stable/c/c3ed222745d9ad7b69299b349a64ba533c64a34f - Patch

19 Jun 2025, 13:15

Type Values Removed Values Added
References
  • {'url': 'https://git.kernel.org/stable/c/eb1fe9600b86c24a789046bfc5c6851dda119280', 'source': '416baaa9-dc9f-4396-8d5f-8c081fb06d67'}
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: NFSv4: Se corrige el error nfs4_label no inicializado en la búsqueda de referencias. Se envía el fattr ya asignado junto con nfs4_fs_locations y se elimina el memcpy de fattr. Terminamos aumentando dos asignaciones más, pero esto soluciona un fallo como: PID: 790 TAREA: ffff88811b43c000 CPU: 0 COMANDO: "ls" #0 [ffffc90000857920] panic en ffffffff81b9bfde #1 [ffffc900008579c0] do_trap en ffffffff81023a9b #2 [ffffc90000857a10] do_error_trap en ffffffff81023b78 #3 [ffffc90000857a58] exc_stack_segment en ffffffff81be1f45 #4 [ffffc90000857a80] asm_exc_stack_segment en ffffffff81c009de #5 [ffffc90000857b08] nfs_lookup en ffffffffa0302322 [nfs] #6 [ffffc90000857b70] __lookup_slow en ffffffff813a4a5f #7 [ffffc90000857c60] walk_component en ffffffff813a86c4 #8 [ffffc90000857cb8] path_lookupat en ffffffff813a9553 #9 [ffffc90000857cf0] filename_lookup en ffffffff813ab86b

26 Feb 2025, 07:01

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:01

Updated : 2025-09-22 20:01

NVD link : CVE-2022-49418

Mitre link : CVE-2022-49418

CVE.ORG link : CVE-2022-49418

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-908

Use of Uninitialized Resource