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CVE-2026-99110VulnerabilityPublished

cifs_do_set_acl() · smb: client: fix heap overflow

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-99110· High

Not known to be exploited · fixed in d96f3365ce61c5f39602955af43c8174548dee98 : patch Microsoft soon.

Data as of 29 Oct 2026, 10:06 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in d96f3365ce61c5f39602955af43c8174548dee98, 596b4062e6c75bdd85a7f2b7f2087a872dc420ac, 1dac61e2c29d1a71784604b48cf3b1234a65ec29

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Oct 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 29 Oct 2026.

What to do

Upgrade Linux to d96f3365ce61c5f39602955af43c8174548dee98, 596b4062e6c75bdd85a7f2b7f2087a872dc420ac or 1dac61e2c29d1a71784604b48cf3b1234a65ec29.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ dc1af4c4b4721abfa07b351063825acc7e69cc66, < d96f3365ce61c5f39602955af43c8174548dee98
Fixed in
  • d96f3365ce61c5f39602955af43c8174548dee98
LinuxLinuxAffected
  • ≥ dc1af4c4b4721abfa07b351063825acc7e69cc66, < 596b4062e6c75bdd85a7f2b7f2087a872dc420ac
Fixed in
  • 596b4062e6c75bdd85a7f2b7f2087a872dc420ac
LinuxLinuxAffected
  • ≥ dc1af4c4b4721abfa07b351063825acc7e69cc66, < 1dac61e2c29d1a71784604b48cf3b1234a65ec29
Fixed in
  • 1dac61e2c29d1a71784604b48cf3b1234a65ec29
LinuxLinuxAffected
  • =6.2
Fixed in–

Description

To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

References

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