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VulnerabilityPublished

CVE-2026-99279: Linux kernel · ksmbd: reclaim ended sessions on logoff and expiration

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in 26534ef335e92b028eb58e44d98d46a0e26af0ec : update Linux kernel when convenient.

Data as of 7 Nov 2026, 14:19 UTC

Severity
Medium

Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in 26534ef335e92b028eb58e44d98d46a0e26af0ec, 1767a5e45dbf6a3b12105196dda4fb0ef80b9698, 7.3

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 7 Nov 2026.

What to do

Upgrade Linux kernel to 26534ef335e92b028eb58e44d98d46a0e26af0ec, 1767a5e45dbf6a3b12105196dda4fb0ef80b9698 or 7.3.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • >=7.2.8 <7.3
Fixed in
  • 26534ef335e92b028eb58e44d98d46a0e26af0ec
  • 1767a5e45dbf6a3b12105196dda4fb0ef80b9698
  • 7.3
LinuxLinuxAffected
  • =7.3
Fixed in–

AI-suggested

A fix is available in Linux kernel version 7.3 and specific commits identified by hashes. Users should upgrade to Linux kernel 7.3 or later to remediate this issue. No additional mitigation steps are indicated or required beyond applying the official fix.

Description

A vulnerability in the Linux kernel's ksmbd component related to session management has been resolved. The issue involved ended sessions retaining memory and connection slots after logoff or expiration, potentially leading to resource retention. The fix ensures proper reclamation and cleanup of these sessions, including unlinking from connections and removing procfs entries to prevent stale session data. This addresses potential resource exhaustion or session management inconsistencies.

References

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