CVE-2024-56774

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-56774
In the Linux kernel, the following vulnerability has been resolved: btrfs: add a sanity check for btrfs root in btrfs_search_slot() Syzbot reports a null-ptr-deref in btrfs_search_slot(). The reproducer is using rescue=ibadroots, and the extent tree root is corrupted thus the extent tree is NULL. When scrub tries to search the extent tree to gather the needed extent info, btrfs_search_slot() doesn't check if the target root is NULL or not, resulting the null-ptr-deref. Add sanity check for btrfs root before using it in btrfs_search_slot().

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/3ed51857a50f530ac7a1482e069dfbd1298558d4 Patch
https://git.kernel.org/stable/c/757171d1369b3b47f36932d40a05a0715496dcab Patch
https://git.kernel.org/stable/c/93992c3d9629b02dccf6849238559d5c24f2dece Patch
https://git.kernel.org/stable/c/c71d114ef68c95da5a82ec85a721ab31f5bd905b Patch
https://git.kernel.org/stable/c/db66fb87c21e8ae724886e6a464dcbac562a64c6 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:6.13:rc1:*:*:*:*:*:*
History

09 Jan 2025, 21:00

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE CWE-476
First Time Linux linux Kernel
Linux
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: añadir una comprobación de cordura para la raíz de btrfs en btrfs_search_slot() Syzbot informa de un null-ptr-deref en btrfs_search_slot(). El reproductor está usando rescue=ibadroots, y la raíz del árbol de extensiones está dañada, por lo que el árbol de extensiones es NULL. Cuando scrub intenta buscar en el árbol de extensiones para reunir la información de extensión necesaria, btrfs_search_slot() no comprueba si la raíz de destino es NULL o no, lo que da como resultado el null-ptr-deref. Añadir una comprobación de cordura para la raíz de btrfs antes de usarlo en btrfs_search_slot().
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/3ed51857a50f530ac7a1482e069dfbd1298558d4 - () https://git.kernel.org/stable/c/3ed51857a50f530ac7a1482e069dfbd1298558d4 - Patch
References () https://git.kernel.org/stable/c/757171d1369b3b47f36932d40a05a0715496dcab - () https://git.kernel.org/stable/c/757171d1369b3b47f36932d40a05a0715496dcab - Patch
References () https://git.kernel.org/stable/c/93992c3d9629b02dccf6849238559d5c24f2dece - () https://git.kernel.org/stable/c/93992c3d9629b02dccf6849238559d5c24f2dece - Patch
References () https://git.kernel.org/stable/c/c71d114ef68c95da5a82ec85a721ab31f5bd905b - () https://git.kernel.org/stable/c/c71d114ef68c95da5a82ec85a721ab31f5bd905b - Patch
References () https://git.kernel.org/stable/c/db66fb87c21e8ae724886e6a464dcbac562a64c6 - () https://git.kernel.org/stable/c/db66fb87c21e8ae724886e6a464dcbac562a64c6 - Patch

08 Jan 2025, 18:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-01-08 18:15

Updated : 2025-01-09 21:00

NVD link : CVE-2024-56774

Mitre link : CVE-2024-56774

CVE.ORG link : CVE-2024-56774

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference