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VulnerabilityPublished

CVE-2026-99280: Linux kernel · ksmbd: drain session procfs readers before dropping table references

Source GCVE Database

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Authoritative record:CVE-2026-99280· Medium

Not known to be exploited · fixed in 6789f0983f8e85ce3a5ed8c50fc05d613ead9c2c : update Linux kernel when convenient.

Data as of 7 Nov 2026, 16:04 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 6789f0983f8e85ce3a5ed8c50fc05d613ead9c2c, 7.3, 1c087cf7d5386c708d8984b263280b42b3daada0

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 6789f0983f8e85ce3a5ed8c50fc05d613ead9c2c, 7.3 or 1c087cf7d5386c708d8984b263280b42b3daada0.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • >=7.2.8 <7.3
Fixed in
  • 6789f0983f8e85ce3a5ed8c50fc05d613ead9c2c
  • 7.3
  • 1c087cf7d5386c708d8984b263280b42b3daada0
LinuxLinuxAffected
  • =7.3
Fixed in–

AI-suggested

A fix for this vulnerability has been implemented in the Linux kernel. Users should apply the official kernel updates that include this patch to ensure proper session and procfs resource management in ksmbd. Since this is a kernel-level fix, upgrading to a patched kernel version is the recommended remediation.

Description

A vulnerability in the Linux kernel's ksmbd component related to session procfs readers and table reference management has been resolved. The flaw involved dropping table references while per-session procfs entries were still accessible, potentially causing improper cleanup and resource handling. The fix ensures procfs entries are removed before dropping table references and properly drains procfs readers during connection cleanup to prevent access to destroyed resources.

References

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