CVE-2025-38675

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-38675
In the Linux kernel, the following vulnerability has been resolved: xfrm: state: initialize state_ptrs earlier in xfrm_state_find In case of preemption, xfrm_state_look_at will find a different pcpu_id and look up states for that other CPU. If we matched a state for CPU2 in the state_cache while the lookup started on CPU1, we will jump to "found", but the "best" state that we got will be ignored and we will enter the "acquire" block. This block uses state_ptrs, which isn't initialized at this point. Let's initialize state_ptrs just after taking rcu_read_lock. This will also prevent a possible misuse in the future, if someone adjusts this function.

4.7 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

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/463562f9591742be62ddde3b426a0533ed496955 Patch
https://git.kernel.org/stable/c/6bf2daafc51bcb9272c0fdff2afd38217337d0d3 Patch
https://git.kernel.org/stable/c/94d077c331730510d5611b438640a292097341f0 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:6.16:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc7:*:*:*:*:*:*
History

25 Nov 2025, 22:05

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:6.16:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc7:*:*:*:*:*:*
First Time Linux
Linux linux Kernel
References () https://git.kernel.org/stable/c/463562f9591742be62ddde3b426a0533ed496955 - () https://git.kernel.org/stable/c/463562f9591742be62ddde3b426a0533ed496955 - Patch
References () https://git.kernel.org/stable/c/6bf2daafc51bcb9272c0fdff2afd38217337d0d3 - () https://git.kernel.org/stable/c/6bf2daafc51bcb9272c0fdff2afd38217337d0d3 - Patch
References () https://git.kernel.org/stable/c/94d077c331730510d5611b438640a292097341f0 - () https://git.kernel.org/stable/c/94d077c331730510d5611b438640a292097341f0 - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 4.7
CWE CWE-362
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: xfrm: state: inicializar state_ptrs antes en xfrm_state_find. En caso de preempción, xfrm_state_look_at encontrará un pcpu_id diferente y buscará los estados de esa otra CPU. Si se encontró un estado para la CPU2 en state_cache mientras la búsqueda se iniciaba en la CPU1, se saltará a "found", pero se ignorará el mejor estado obtenido y se accederá al bloque "acquire". Este bloque utiliza state_ptrs, que aún no está inicializado. Inicialicemos state_ptrs justo después de ejecutar rcu_read_lock. Esto también evitará un posible uso indebido en el futuro si alguien ajusta esta función.

22 Aug 2025, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-08-22 16:15

Updated : 2025-11-25 22:05

NVD link : CVE-2025-38675

Mitre link : CVE-2025-38675

CVE.ORG link : CVE-2025-38675

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')