CVE record · CVE-2026-99083

ksmbd: fix heap out-of-bounds write in krb5_authenticate()

CVSS 8.8 HighEPSS 0.0044 · 38th percentile

Published by the CVE Program (CNA: Linux) at 23 Oct 2026, 12:45 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 676392184785ace61e939831e7ca44a03d438c3b to before a07dfb33112a42437f9d2d0bfd35c68575257381 git affected ef572ffa8eb44111eed2925fbb2adca78bdcbf61 to before 1f73a6d40f4d1bae4f3491c0ec1ea8ee6ce035ff git affected 98422bdd4cb3ca4d08844046f6507d7ec2c2b8d8 to before 59c6dcc5dd9dafe764ca0d40525933b2be69b059 git affected 98422bdd4cb3ca4d08844046f6507d7ec2c2b8d8 to before 80af1bde97d5a85ad6f2c40ca894ccc8fa75a27a git affected 98422bdd4cb3ca4d08844046f6507d7ec2c2b8d8 to before 517404e157395d0f8da125ca956c566895dfcd06 git affected 98422bdd4cb3ca4d08844046f6507d7ec2c2b8d8 to before 4722d06b2907585074252061b1024a696c1cfc23 git affected 98422bdd4cb3ca4d08844046f6507d7ec2c2b8d8 to before 23a0be6a84a38ac169eeab49017934e8e27c65f0 git affected 2ba03cecb12ac7ac9e0170e251543c56832d9959 git affected 5.15.145 to before 5.15.224 semver affected 6.1.40 to before 6.1.191 semver affected 6.4.5 to before 6.5 semver Other versions: unaffected
Linux	Linux	affected 6.5 unaffected before 6.5 semver unaffected 5.15.224 to 5.15., inclusive semver unaffected 6.1.191 to 6.1., inclusive semver unaffected 6.6.160 to 6.6., inclusive semver unaffected 6.12.114 to 6.12., inclusive semver unaffected 6.18.58 to 6.18., inclusive semver unaffected 7.2.12 to 7.2., inclusive semver unaffected 7.3 to *, inclusive original_commit_for_fix Other versions: affected

Identifiers: CVE-2026-99083
CNA: Linux
Tags: Linux kernel
Published: 23 Oct 2026
Updated: 30 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:L/UI:N/S:U/C:H/I:H/A:H	CNA (Linux)

CISA KEV Not listed.
EPSS 0.0044, the 38th 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 23 Oct 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.