Buffer Overflow Affecting torvalds/linux package, versions [6.1.71,6.1.191)[5.15.145,5.16)[6.6,6.6.143)[6.7,6.12.81)[6.13,6.18.22)[6.19,6.19.12)
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-20788224
- published10 Oct 2026
- disclosed22 Apr 2026
- creditUnknown
Introduced: 22 Apr 2026
CVE-2026-31432 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 6.1.191, 5.16, 6.6.143, 6.12.81, 6.18.22, 6.19.12 or higher.
Overview
Affected versions of this package are vulnerable to Buffer Overflow in the ksmbd process when handling compound requests that include a READ followed by a QUERY_INFO(Security) command. An attacker can cause an out-of-bounds write to kernel heap memory by sending a specially crafted compound SMB request where the first command consumes most of the response buffer, leading to potential kernel heap corruption, information disclosure, or code execution.
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