CVE-2026-97615: Linux kernel · net: bridge: use option bits for CFM/MRP frame handlers
Source GCVE Database
Not known to be exploited · fixed in be5ead6552418d70df3a76b962ccd6ed78a31fb5 : update Linux kernel when convenient.
Data as of 30 Oct 2026, 17:32 UTC
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
Disclosed: evidence found.
CVE published 25 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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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
- nvd.nist.gov/vuln/detail/CVE-2026-97615 (opens in a new tab)
- git.kernel.org/stable/c/158b6563c6c9dc0f368a2169911fb4f8a5ea0592 (opens in a new tab)
- git.kernel.org/stable/c/260f99b355a44f6ce67971ebc9223b22c8f93957 (opens in a new tab)
- git.kernel.org/stable/c/42e033c8f30fd2923ccac3373ae70797e521dae1 (opens in a new tab)
- git.kernel.org/stable/c/7a49e6b16f36b8e085521699adbca3e321b6dd0c (opens in a new tab)
- git.kernel.org/stable/c/935eb5581583b008d0c8e928c03021b45967439b (opens in a new tab)
- git.kernel.org/stable/c/994fd705ca498223d188024cde833739a9dddbd2 (opens in a new tab)
- git.kernel.org/stable/c/be5ead6552418d70df3a76b962ccd6ed78a31fb5 (opens in a new tab)