CVE-2022-48939

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-48939
In the Linux kernel, the following vulnerability has been resolved: bpf: Add schedule points in batch ops syzbot reported various soft lockups caused by bpf batch operations. INFO: task kworker/1:1:27 blocked for more than 140 seconds. INFO: task hung in rcu_barrier Nothing prevents batch ops to process huge amount of data, we need to add schedule points in them. Note that maybe_wait_bpf_programs(map) calls from generic_map_delete_batch() can be factorized by moving the call after the loop. This will be done later in -next tree once we get this fix merged, unless there is strong opinion doing this optimization sooner.

3.3 /10

CVSS v3 : LOW

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/75134f16e7dd0007aa474b281935c5f42e79f2c8 Patch
https://git.kernel.org/stable/c/7e8099967d0e3ff9d1ae043e80b27fbe46c08417 Patch
https://git.kernel.org/stable/c/7ef94bfb08fb9e73defafbd5ddef6b5a0e2ee12b Patch
https://git.kernel.org/stable/c/8628f489b749a4f9767991631921dbe3fbcdc784 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:*:*:*:*:*:*:*:*
History

22 Aug 2024, 19:02

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 3.3
References () https://git.kernel.org/stable/c/75134f16e7dd0007aa474b281935c5f42e79f2c8 - () https://git.kernel.org/stable/c/75134f16e7dd0007aa474b281935c5f42e79f2c8 - Patch
References () https://git.kernel.org/stable/c/7e8099967d0e3ff9d1ae043e80b27fbe46c08417 - () https://git.kernel.org/stable/c/7e8099967d0e3ff9d1ae043e80b27fbe46c08417 - Patch
References () https://git.kernel.org/stable/c/7ef94bfb08fb9e73defafbd5ddef6b5a0e2ee12b - () https://git.kernel.org/stable/c/7ef94bfb08fb9e73defafbd5ddef6b5a0e2ee12b - Patch
References () https://git.kernel.org/stable/c/8628f489b749a4f9767991631921dbe3fbcdc784 - () https://git.kernel.org/stable/c/8628f489b749a4f9767991631921dbe3fbcdc784 - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
First Time Linux linux Kernel
Linux
CWE CWE-834

22 Aug 2024, 12:48

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: bpf: agregar puntos de programación en operaciones por lotes syzbot informó varios bloqueos suaves causados por operaciones por lotes de bpf. INFORMACIÓN: tarea kworker/1:1:27 bloqueada durante más de 140 segundos. INFORMACIÓN: tarea colgada en rcu_barrier Nada impide que las operaciones por lotes procesen una gran cantidad de datos, necesitamos agregar puntos de programación en ellas. Tenga en cuenta que las llamadas de Maybe_wait_bpf_programs(map) desde generic_map_delete_batch() se pueden factorizar moviendo la llamada después del ciclo. Esto se hará más adelante en el árbol siguiente una vez que combinemos esta solución, a menos que haya una opinión firme sobre realizar esta optimización antes.

22 Aug 2024, 04:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-08-22 04:15

Updated : 2024-08-22 19:02

NVD link : CVE-2022-48939

Mitre link : CVE-2022-48939

CVE.ORG link : CVE-2022-48939

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-834

Excessive Iteration