Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') Affecting torvalds/linux package, versions [4.6,6.12.43)[6.13,6.15.11)[6.16,6.16.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-20700019
- published10 Oct 2026
- disclosed4 Sept 2025
- creditUnknown
Introduced: 4 Sep 2025
CVE-2025-38717 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 6.12.43, 6.15.11, 6.16.2 or higher.
Overview
Affected versions of this package are vulnerable to Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') through a race condition in the kcm_unattach process. An attacker can achieve arbitrary code execution, leak sensitive kernel memory, and cause system instability by triggering concurrent operations on AF_KCM sockets, specifically by racing the detachment and release of sockets to induce use-after-free conditions in kernel memory. This is only exploitable if the attacker can create and manipulate AF_KCM sockets locally without elevated privileges.
Note: The Linux kernel project assigns a CVE to every bug fix it ships, whether or not the bug has been shown to be exploitable. This advisory was generated from that process and has not been individually assessed for exploitability. See the kernel's CVE process documentation: https://github.com/torvalds/linux/blob/master/Documentation/process/cve.rst