Out-of-bounds Write Affecting torvalds/linux package, versions [5.18,6.1.191)[6.2,6.6.160)[6.7,6.12.114)[6.13,6.18.57)[6.19,7.1.5)
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-20792384
- published11 Oct 2026
- disclosed15 Aug 2026
- creditUnknown
Introduced: 15 Aug 2026
CVE-2026-72423 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 6.1.191, 6.6.160, 6.12.114, 6.18.57, 7.1.5 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Write through the conntrack kfuncs when the opts__sz argument is smaller than the offset of the error field. An attacker can corrupt adjacent BPF stack memory with controlled values by invoking the kfuncs with a crafted size parameter, potentially leading to kernel memory disclosure, privilege escalation, or denial of service.
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