CVE record · CVE-2026-31709

smb: client: validate the whole DACL before rewriting it in cifsacl

CVSS 8.8 HighEPSS 0.0034 · 28th percentile

Published by the CVE Program (CNA: Linux) at 1 May 2026, 13:56 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Linux	Linux	affected bc3e9dd9d104ca1b75644eab87b38ce8a924aef4 to before b8603d9ae6c9087662b098619996bc4a8064319d git affected bc3e9dd9d104ca1b75644eab87b38ce8a924aef4 to before c2abdebf72000a64603ced84d36ccbd164f11391 git affected bc3e9dd9d104ca1b75644eab87b38ce8a924aef4 to before 8e47d297e7cf9a6029a0d38e7b22faba7d7aaf12 git affected bc3e9dd9d104ca1b75644eab87b38ce8a924aef4 to before d92f3f0b22414e7515696a02224d0af55e3004a3 git affected bc3e9dd9d104ca1b75644eab87b38ce8a924aef4 to before ff0ca46b13b9ef6edbcd238a3b6caacfef8ba0e5 git affected bc3e9dd9d104ca1b75644eab87b38ce8a924aef4 to before b78db9bddc84136f6a0bb49e8883cf200dfb87a8 git affected bc3e9dd9d104ca1b75644eab87b38ce8a924aef4 to before 0a8cf165566ba55a39fd0f4de172119dd646d39a git Other versions: unaffected
Linux	Linux	affected 5.12 unaffected before 5.12 semver unaffected 5.15.210 to 5.15., inclusive semver unaffected 6.1.176 to 6.1., inclusive semver unaffected 6.6.140 to 6.6., inclusive semver unaffected 6.12.86 to 6.12., inclusive semver unaffected 6.18.35 to 6.18., inclusive semver unaffected 7.0.2 to 7.0., inclusive semver unaffected 7.1 to *, inclusive original_commit_for_fix Other versions: affected

Identifiers: CVE-2026-31709
CNA: Linux
Weakness (CWE): CWE-125 · CWE-1288
Tags: Linux kernel
Memory corruption
CWE-1288
Published: 1 May 2026
Updated: 19 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.8	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CNA (Linux)Used for this record
7.8	High	3.1	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	ADP (redhat-SADP)

CISA KEV Not listed.
EPSS 0.0034, the 28th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 1 May 2026. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.