CVE-2024-39472

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-39472
In the Linux kernel, the following vulnerability has been resolved: xfs: fix log recovery buffer allocation for the legacy h_size fixup Commit a70f9fe52daa ("xfs: detect and handle invalid iclog size set by mkfs") added a fixup for incorrect h_size values used for the initial umount record in old xfsprogs versions. Later commit 0c771b99d6c9 ("xfs: clean up calculation of LR header blocks") cleaned up the log reover buffer calculation, but stoped using the fixed up h_size value to size the log recovery buffer, which can lead to an out of bounds access when the incorrect h_size does not come from the old mkfs tool, but a fuzzer. Fix this by open coding xlog_logrec_hblks and taking the fixed h_size into account for this calculation.

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/45cf976008ddef4a9c9a30310c9b4fb2a9a6602a Mailing List Patch
https://git.kernel.org/stable/c/57835c0e7152e36b03875dd6c56dfeed685c1b1f
https://git.kernel.org/stable/c/c2389c074973aa94e34992e7f66dac0de37595b5
https://git.kernel.org/stable/c/f754591b17d0ee91c2b45fe9509d0cdc420527cb
Configurations

Configuration 1 (hide)

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

19 Aug 2024, 05:15

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/f754591b17d0ee91c2b45fe9509d0cdc420527cb -

14 Aug 2024, 14:15

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/57835c0e7152e36b03875dd6c56dfeed685c1b1f -
  • () https://git.kernel.org/stable/c/c2389c074973aa94e34992e7f66dac0de37595b5 -

08 Jul 2024, 17:12

Type Values Removed Values Added
CWE CWE-770
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
First Time Linux
Linux linux Kernel
References () https://git.kernel.org/stable/c/45cf976008ddef4a9c9a30310c9b4fb2a9a6602a - () https://git.kernel.org/stable/c/45cf976008ddef4a9c9a30310c9b4fb2a9a6602a - Mailing List, Patch

05 Jul 2024, 12:55

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: xfs: corrige la asignación del búfer de recuperación de registros para la corrección heredada de h_size. El commit a70f9fe52daa ("xfs: detecta y maneja el tamaño de iclog no válido establecido por mkfs") agregó una corrección para los valores incorrectos de h_size usados para el registro desmontaje inicial en versiones antiguas de xfsprogs. Posteriormente, el commit 0c771b99d6c9 ("xfs: cálculo de limpieza de bloques de encabezado LR") limpió el cálculo del búfer de recuperación de registros, pero dejó de usar el valor h_size fijo para dimensionar el búfer de recuperación de registros, lo que puede provocar un acceso fuera de los límites cuando el h_size incorrecto no proviene de la antigua herramienta mkfs, sino de un fuzzer. Solucione este problema abriendo la codificación xlog_logrec_hblks y teniendo en cuenta el h_size fijo para este cálculo.

05 Jul 2024, 07:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-07-05 07:15

Updated : 2024-08-19 05:15

NVD link : CVE-2024-39472

Mitre link : CVE-2024-39472

CVE.ORG link : CVE-2024-39472

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-770

Allocation of Resources Without Limits or Throttling