CVE-2025-22057

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-22057
In the Linux kernel, the following vulnerability has been resolved: net: decrease cached dst counters in dst_release Upstream fix ac888d58869b ("net: do not delay dst_entries_add() in dst_release()") moved decrementing the dst count from dst_destroy to dst_release to avoid accessing already freed data in case of netns dismantle. However in case CONFIG_DST_CACHE is enabled and OvS+tunnels are used, this fix is incomplete as the same issue will be seen for cached dsts: Unable to handle kernel paging request at virtual address ffff5aabf6b5c000 Call trace: percpu_counter_add_batch+0x3c/0x160 (P) dst_release+0xec/0x108 dst_cache_destroy+0x68/0xd8 dst_destroy+0x13c/0x168 dst_destroy_rcu+0x1c/0xb0 rcu_do_batch+0x18c/0x7d0 rcu_core+0x174/0x378 rcu_core_si+0x18/0x30 Fix this by invalidating the cache, and thus decrementing cached dst counters, in dst_release too.

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/3a0a3ff6593d670af2451ec363ccb7b18aec0c0a Patch
https://git.kernel.org/stable/c/836415a8405c9665ae55352fc5ba865c242f5e4f Patch
https://git.kernel.org/stable/c/92a5c18513117be69bc00419dd1724c1940f8fcd Patch
https://git.kernel.org/stable/c/ccc331fd5bcae131d2627d5ef099d4a1f6540aea Patch
https://git.kernel.org/stable/c/e833e7ad64eb2f63867f65303be49ca30ee8819e 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:*:*:*:*:*:*:*:*
History

31 Oct 2025, 20:17

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: disminuir los contadores dst en caché en dst_release La corrección ascendente ac888d58869b ("net: no retrasar dst_entries_add() en dst_release()") se movió y disminuyó el recuento dst de dst_destroy a dst_release para evitar acceder a datos ya liberados en caso de desmantelamiento de netns. Sin embargo, en caso de que CONFIG_DST_CACHE esté habilitado y se usen túneles OvS+, esta corrección está incompleta ya que se verá el mismo problema para los dst en caché: No se puede manejar la solicitud de paginación del núcleo en la dirección virtual ffff5aabf6b5c000 Rastreo de llamadas: percpu_counter_add_batch+0x3c/0x160 (P) dst_release+0xec/0x108 dst_cache_destroy+0x68/0xd8 dst_destroy+0x13c/0x168 dst_destroy_rcu+0x1c/0xb0 rcu_do_batch+0x18c/0x7d0 rcu_core+0x174/0x378 rcu_core_si+0x18/0x30 Corrija esto invalidando el caché y, por lo tanto, disminuyendo los contadores dst en caché. dst_release también.
References () https://git.kernel.org/stable/c/3a0a3ff6593d670af2451ec363ccb7b18aec0c0a - () https://git.kernel.org/stable/c/3a0a3ff6593d670af2451ec363ccb7b18aec0c0a - Patch
References () https://git.kernel.org/stable/c/836415a8405c9665ae55352fc5ba865c242f5e4f - () https://git.kernel.org/stable/c/836415a8405c9665ae55352fc5ba865c242f5e4f - Patch
References () https://git.kernel.org/stable/c/92a5c18513117be69bc00419dd1724c1940f8fcd - () https://git.kernel.org/stable/c/92a5c18513117be69bc00419dd1724c1940f8fcd - Patch
References () https://git.kernel.org/stable/c/ccc331fd5bcae131d2627d5ef099d4a1f6540aea - () https://git.kernel.org/stable/c/ccc331fd5bcae131d2627d5ef099d4a1f6540aea - Patch
References () https://git.kernel.org/stable/c/e833e7ad64eb2f63867f65303be49ca30ee8819e - () https://git.kernel.org/stable/c/e833e7ad64eb2f63867f65303be49ca30ee8819e - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
First Time Linux linux Kernel
Linux
CWE NVD-CWE-noinfo
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5

16 Apr 2025, 15:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-04-16 15:15

Updated : 2025-10-31 20:17

NVD link : CVE-2025-22057

Mitre link : CVE-2025-22057

CVE.ORG link : CVE-2025-22057

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo