CVE-2023-52569

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-52569
In the Linux kernel, the following vulnerability has been resolved: btrfs: remove BUG() after failure to insert delayed dir index item Instead of calling BUG() when we fail to insert a delayed dir index item into the delayed node's tree, we can just release all the resources we have allocated/acquired before and return the error to the caller. This is fine because all existing call chains undo anything they have done before calling btrfs_insert_delayed_dir_index() or BUG_ON (when creating pending snapshots in the transaction commit path). So remove the BUG() call and do proper error handling. This relates to a syzbot report linked below, but does not fix it because it only prevents hitting a BUG(), it does not fix the issue where somehow we attempt to use twice the same index number for different index items.

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/2c58c3931ede7cd08cbecf1f1a4acaf0a04a41a9 Patch
https://git.kernel.org/stable/c/39c4a9522db0072570d602e9b365119e17fb9f4f Patch
https://git.kernel.org/stable/c/d10fd53393cc5de4b9cf1a4b8f9984f0a037aa51 Patch
https://git.kernel.org/stable/c/2c58c3931ede7cd08cbecf1f1a4acaf0a04a41a9 Patch
https://git.kernel.org/stable/c/39c4a9522db0072570d602e9b365119e17fb9f4f Patch
https://git.kernel.org/stable/c/d10fd53393cc5de4b9cf1a4b8f9984f0a037aa51 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:6.6:rc1:*:*:*:*:*:*
History

16 Jan 2025, 17:08

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/2c58c3931ede7cd08cbecf1f1a4acaf0a04a41a9 - () https://git.kernel.org/stable/c/2c58c3931ede7cd08cbecf1f1a4acaf0a04a41a9 - Patch
References () https://git.kernel.org/stable/c/39c4a9522db0072570d602e9b365119e17fb9f4f - () https://git.kernel.org/stable/c/39c4a9522db0072570d602e9b365119e17fb9f4f - Patch
References () https://git.kernel.org/stable/c/d10fd53393cc5de4b9cf1a4b8f9984f0a037aa51 - () https://git.kernel.org/stable/c/d10fd53393cc5de4b9cf1a4b8f9984f0a037aa51 - Patch
First Time Linux
Linux linux Kernel
CWE CWE-617
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:*

21 Nov 2024, 08:40

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/2c58c3931ede7cd08cbecf1f1a4acaf0a04a41a9 - () https://git.kernel.org/stable/c/2c58c3931ede7cd08cbecf1f1a4acaf0a04a41a9 -
References () https://git.kernel.org/stable/c/39c4a9522db0072570d602e9b365119e17fb9f4f - () https://git.kernel.org/stable/c/39c4a9522db0072570d602e9b365119e17fb9f4f -
References () https://git.kernel.org/stable/c/d10fd53393cc5de4b9cf1a4b8f9984f0a037aa51 - () https://git.kernel.org/stable/c/d10fd53393cc5de4b9cf1a4b8f9984f0a037aa51 -
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: elimina BUG() después de no poder insertar un elemento de índice de directorio retrasado. En lugar de llamar a BUG() cuando no logramos insertar un elemento de índice de directorio retrasado en el árbol del nodo retrasado, podemos simplemente libere todos los recursos que hemos asignado/adquirido antes y devuelva el error a la persona que llama. Esto está bien porque todas las cadenas de llamadas existentes deshacen todo lo que hayan hecho antes de llamar a btrfs_insert_delayed_dir_index() o BUG_ON (al crear instantáneas pendientes en la ruta de confirmación de la transacción). Así que elimine la llamada BUG() y realice un manejo adecuado de los errores. Esto se relaciona con un informe de syzbot vinculado a continuación, pero no lo soluciona porque solo evita que se produzca un ERROR (), no soluciona el problema por el cual de alguna manera intentamos usar el doble del mismo número de índice para diferentes elementos de índice.

02 Mar 2024, 22:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-03-02 22:15

Updated : 2025-01-16 17:08

NVD link : CVE-2023-52569

Mitre link : CVE-2023-52569

CVE.ORG link : CVE-2023-52569

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-617

Reachable Assertion