Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2025-38717

Severity CVSS v4.0:
Pending analysis
Type:
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Publication date:
04/09/2025
Last modified:
25/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net: kcm: Fix race condition in kcm_unattach()<br /> <br /> syzbot found a race condition when kcm_unattach(psock)<br /> and kcm_release(kcm) are executed at the same time.<br /> <br /> kcm_unattach() is missing a check of the flag<br /> kcm-&gt;tx_stopped before calling queue_work().<br /> <br /> If the kcm has a reserved psock, kcm_unattach() might get executed<br /> between cancel_work_sync() and unreserve_psock() in kcm_release(),<br /> requeuing kcm-&gt;tx_work right before kcm gets freed in kcm_done().<br /> <br /> Remove kcm-&gt;tx_stopped and replace it by the less<br /> error-prone disable_work_sync().

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 4.70 MEDIUM
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
4.70
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.6 (including) 6.12.43 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.13 (including) 6.15.11 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.16 (including) 6.16.2 (excluding)
cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools