CVE-2025-21955

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-21955
In the Linux kernel, the following vulnerability has been resolved: ksmbd: prevent connection release during oplock break notification ksmbd_work could be freed when after connection release. Increment r_count of ksmbd_conn to indicate that requests are not finished yet and to not release the connection.

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/09aeab68033161cb54f194da93e51a11aee6144b Patch
https://git.kernel.org/stable/c/3aa660c059240e0c795217182cf7df32909dd917 Patch
https://git.kernel.org/stable/c/a4261bbc33fbf99b99c80aa3a2c5097611802980 Patch
https://git.kernel.org/stable/c/f17d1c63a76b0fe8e9c78023a86507a3a6d62cfa 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:6.14:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc6:*:*:*:*:*:*
History

31 Oct 2025, 18:20

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/09aeab68033161cb54f194da93e51a11aee6144b - () https://git.kernel.org/stable/c/09aeab68033161cb54f194da93e51a11aee6144b - Patch
References () https://git.kernel.org/stable/c/3aa660c059240e0c795217182cf7df32909dd917 - () https://git.kernel.org/stable/c/3aa660c059240e0c795217182cf7df32909dd917 - Patch
References () https://git.kernel.org/stable/c/a4261bbc33fbf99b99c80aa3a2c5097611802980 - () https://git.kernel.org/stable/c/a4261bbc33fbf99b99c80aa3a2c5097611802980 - Patch
References () https://git.kernel.org/stable/c/f17d1c63a76b0fe8e9c78023a86507a3a6d62cfa - () https://git.kernel.org/stable/c/f17d1c63a76b0fe8e9c78023a86507a3a6d62cfa - Patch
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ksmbd: impide la liberación de la conexión durante la notificación de interrupción del bloqueo de oplock. ksmbd_work podría liberarse después de la liberación de la conexión. Incremente r_count de ksmbd_conn para indicar que las solicitudes aún no han finalizado y para no liberar la conexión.
CPE cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux
Linux linux Kernel
CWE NVD-CWE-noinfo

01 Apr 2025, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-04-01 16:15

Updated : 2025-10-31 18:20

NVD link : CVE-2025-21955

Mitre link : CVE-2025-21955

CVE.ORG link : CVE-2025-21955

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo