CVE-2026-98600: Linux kernel · Bluetooth: RFCOMM: Reject short EA=0 frames in rfcomm_recv_frame()
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in c25587fa26761e623198b4f47151fe79d09ccde6 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 13:47 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in c25587fa26761e623198b4f47151fe79d09ccde6, be00deee60044ffa820f9436415caeb665b2cda0, 97711b964877242933484989224a3c4c5d88a5ee +7
Exploitation evidence
Disclosed: evidence found.
CVE published 18 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
This vulnerability is fixed in Linux kernel versions 6.12.112, 6.18.55, and later. Users should upgrade to these or newer kernel versions to remediate the issue. No additional mitigation actions are required beyond applying the official fix.
Description
A vulnerability in the Linux kernel Bluetooth RFCOMM implementation allows short EA=0 frames to be improperly processed due to insufficient length checks in rfcomm_recv_frame(). This can cause malformed frames to be treated as valid payload or control commands. The issue is fixed by extending the length check to require a longer frame length when the extended length field is present.
References
- git.kernel.org/stable/c/76876fd26569302d26d91cbe8b75fa8e66cf8969 (opens in a new tab)
- git.kernel.org/stable/c/97711b964877242933484989224a3c4c5d88a5ee (opens in a new tab)
- git.kernel.org/stable/c/7a1781a2f3a9667b3065d402d1f11986a2363e08 (opens in a new tab)
- git.kernel.org/stable/c/c25587fa26761e623198b4f47151fe79d09ccde6 (opens in a new tab)
- git.kernel.org/stable/c/71ccacde407b7d8f0ef48974a0d2524602fd5c44 (opens in a new tab)
- git.kernel.org/stable/c/be00deee60044ffa820f9436415caeb665b2cda0 (opens in a new tab)
- git.kernel.org/stable/c/9240fc1f2cde5331c61608da21b00394602ca762 (opens in a new tab)
- git.kernel.org/stable/c/6d91041bb38b97e2feb625123cc0529d7b83a0e1 (opens in a new tab)