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VulnerabilityPublished Updated

CVE-2026-97615: Linux kernel · net: bridge: use option bits for CFM/MRP frame handlers

Source GCVE Database

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Authoritative record:CVE-2026-97615· Medium

Not known to be exploited · fixed in be5ead6552418d70df3a76b962ccd6ed78a31fb5 : update Linux kernel when convenient.

Data as of 30 Oct 2026, 17:32 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 be5ead6552418d70df3a76b962ccd6ed78a31fb5, 994fd705ca498223d188024cde833739a9dddbd2, 935eb5581583b008d0c8e928c03021b45967439b +4

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 30 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 90c628dd47ff4178f645b34938470bf43d02d123, < be5ead6552418d70df3a76b962ccd6ed78a31fb5
Fixed in
  • be5ead6552418d70df3a76b962ccd6ed78a31fb5
LinuxLinuxAffected
  • ≥ 90c628dd47ff4178f645b34938470bf43d02d123, < 994fd705ca498223d188024cde833739a9dddbd2
Fixed in
  • 994fd705ca498223d188024cde833739a9dddbd2
LinuxLinuxAffected
  • ≥ 90c628dd47ff4178f645b34938470bf43d02d123, < 935eb5581583b008d0c8e928c03021b45967439b
Fixed in
  • 935eb5581583b008d0c8e928c03021b45967439b
LinuxLinuxAffected
  • ≥ 90c628dd47ff4178f645b34938470bf43d02d123, < 260f99b355a44f6ce67971ebc9223b22c8f93957
Fixed in
  • 260f99b355a44f6ce67971ebc9223b22c8f93957
LinuxLinuxAffected
  • ≥ 90c628dd47ff4178f645b34938470bf43d02d123, < 158b6563c6c9dc0f368a2169911fb4f8a5ea0592
Fixed in
  • 158b6563c6c9dc0f368a2169911fb4f8a5ea0592
LinuxLinuxAffected
  • ≥ 90c628dd47ff4178f645b34938470bf43d02d123, < 42e033c8f30fd2923ccac3373ae70797e521dae1
Fixed in
  • 42e033c8f30fd2923ccac3373ae70797e521dae1

AI-suggested

A fix has been implemented in the Linux kernel to track CFM/MRP frame handlers per bridge using option bits and remove the shared list structure. Users should update to a kernel version that includes this fix once available.

Description

A vulnerability in the Linux kernel's network bridge code related to CFM and MRP frame handlers has been resolved. The issue involved a global frame handler node being linked into multiple bridge lists, causing list corruption when unregistered on one bridge. The fix involves tracking per-bridge enable state with option bits and removing the shared list structure to prevent corruption and improve performance.

References

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