Use After Free Affecting torvalds/linux package, versions [3.6,6.1.191)[6.2,6.6.130)[6.7,6.12.78)[6.13,6.18.7)
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-20772814
- published10 Oct 2026
- disclosed25 Jan 2026
- creditUnknown
Introduced: 25 Jan 2026
CVE-2026-23004 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 6.1.191, 6.6.130, 6.12.78, 6.18.7 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free in the rt6_uncached_list_del process. An attacker can cause kernel memory corruption or system crash by triggering a race condition during route and device teardown operations in network namespaces. This is only exploitable if the attacker has CAP_NET_ADMIN privileges within a user-created network namespace on systems that allow user namespaces.
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