CVE-2023-52979

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-52979
In the Linux kernel, the following vulnerability has been resolved: squashfs: harden sanity check in squashfs_read_xattr_id_table While mounting a corrupted filesystem, a signed integer '*xattr_ids' can become less than zero. This leads to the incorrect computation of 'len' and 'indexes' values which can cause null-ptr-deref in copy_bio_to_actor() or out-of-bounds accesses in the next sanity checks inside squashfs_read_xattr_id_table(). Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

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/29e774dcb27116c06b9c57b1f1f14a1623738989 Patch
https://git.kernel.org/stable/c/72e544b1b28325fe78a4687b980871a7e4101f76 Patch
https://git.kernel.org/stable/c/b30a74f83265c24d1d0842c6c3928cd2e775a3fb Patch
https://git.kernel.org/stable/c/b7398efe24a965cf3937b716c0b1011c201c5d6e Patch
https://git.kernel.org/stable/c/cf5d6612092408157db6bb500c70bf6d67c40fbc Patch
https://git.kernel.org/stable/c/db76fc535fbdfbf29fd0b93e49627537ad794c8c Patch
https://git.kernel.org/stable/c/de2785aa3448d1ee7be3ab47fd4a873025f1b3d7 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc6:*:*:*:*:*:*
History

15 Apr 2025, 14:08

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE CWE-476
References () https://git.kernel.org/stable/c/29e774dcb27116c06b9c57b1f1f14a1623738989 - () https://git.kernel.org/stable/c/29e774dcb27116c06b9c57b1f1f14a1623738989 - Patch
References () https://git.kernel.org/stable/c/72e544b1b28325fe78a4687b980871a7e4101f76 - () https://git.kernel.org/stable/c/72e544b1b28325fe78a4687b980871a7e4101f76 - Patch
References () https://git.kernel.org/stable/c/b30a74f83265c24d1d0842c6c3928cd2e775a3fb - () https://git.kernel.org/stable/c/b30a74f83265c24d1d0842c6c3928cd2e775a3fb - Patch
References () https://git.kernel.org/stable/c/b7398efe24a965cf3937b716c0b1011c201c5d6e - () https://git.kernel.org/stable/c/b7398efe24a965cf3937b716c0b1011c201c5d6e - Patch
References () https://git.kernel.org/stable/c/cf5d6612092408157db6bb500c70bf6d67c40fbc - () https://git.kernel.org/stable/c/cf5d6612092408157db6bb500c70bf6d67c40fbc - Patch
References () https://git.kernel.org/stable/c/db76fc535fbdfbf29fd0b93e49627537ad794c8c - () https://git.kernel.org/stable/c/db76fc535fbdfbf29fd0b93e49627537ad794c8c - Patch
References () https://git.kernel.org/stable/c/de2785aa3448d1ee7be3ab47fd4a873025f1b3d7 - () https://git.kernel.org/stable/c/de2785aa3448d1ee7be3ab47fd4a873025f1b3d7 - Patch
First Time Linux linux Kernel
Linux
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: squashfs: endurecimiento de la comprobación de seguridad en squashfs_read_xattr_id_table. Al montar un sistema de archivos dañado, un entero con signo '*xattr_ids' puede ser menor que cero. Esto provoca el cálculo incorrecto de los valores de 'len' e 'indexes', lo que puede causar un valor nulo de referencia de referencia (ptr) en copy_bio_to_actor() o accesos fuera de límites en las siguientes comprobaciones de seguridad dentro de squashfs_read_xattr_id_table(). Encontrado por el Centro de Verificación de Linux (linuxtesting.org) con Syzkaller.

27 Mar 2025, 17:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-03-27 17:15

Updated : 2025-04-15 14:08

NVD link : CVE-2023-52979

Mitre link : CVE-2023-52979

CVE.ORG link : CVE-2023-52979

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference