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CVE-2026-97554VulnerabilityPublished Updated

cifs_posix_to_fattr() · smb: client: avoid using uninitialized SIDs

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-97554· Medium

Not known to be exploited · fixed in da6e25842431982d5a53cf00d925b98c690f4467 : update Microsoft when convenient.

Data as of 7 Nov 2026, 12:19 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in da6e25842431982d5a53cf00d925b98c690f4467, c9a8b60ce140a68d172452f418137fc7ddbae7db, 33106019c3be57b5fc6411cfaad6d98214a51265 +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Sep 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 to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • >=5.8.17 <5.9
  • >=5.9.2 <5.10
Fixed in
  • da6e25842431982d5a53cf00d925b98c690f4467
  • c9a8b60ce140a68d172452f418137fc7ddbae7db
  • 33106019c3be57b5fc6411cfaad6d98214a51265
  • 1915b69e36906968e2b698699d0f219875ae846e
  • 604feb3e8141bf11f5afd48d36d401fee5af9536
  • 5.10
  • 5.9
  • 2be31f252ade791b84f7164991f14436aed1d4b9
LinuxLinuxAffected
  • =5.10
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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