CVE-2026-80763: Linux kernel · Bluetooth: hci_event: validate LE Set CIG Parameters response
Source GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 14:05 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 4 Sep 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.
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: validate LE Set CIG Parameters response The Command Complete dispatch validates only the fixed part of the LE Set CIG Parameters response. After that part is pulled from the skb, hci_cc_le_set_cig_params() trusts num_handles and reads each entry in the trailing handle array. Matching num_handles against the command's num_cis does not guarantee that the response contains the advertised handles. A truncated response from a malfunctioning controller can therefore make the handler read beyond the skb data. Validate that the remaining skb data contains all advertised handles. Include this in the existing response validation so malformed responses also follow the established CIG failure handling.
References
- nvd.nist.gov/vuln/detail/CVE-2026-80763 (opens in a new tab)
- git.kernel.org/stable/c/0acd4eeb4b225b9bebbf9ef96cc10cdd79b94899 (opens in a new tab)
- git.kernel.org/stable/c/26741d178f31932c9018b36b7953e6dc391436a4 (opens in a new tab)
- git.kernel.org/stable/c/6fc540e835dddb518cef3ff522b780f701cd03df (opens in a new tab)
- git.kernel.org/stable/c/9e05783d0bb96a7b853cc058a7c7de2dc4a62154 (opens in a new tab)
- git.kernel.org/stable/c/a34df5c4a439cfc04565fa5be608ed1e53134f1f (opens in a new tab)
- git.kernel.org/stable/c/d83ecb7b96105d932dabaa56ccd7418c25fb7cbb (opens in a new tab)
- git.kernel.org/stable/c/e3f82e8f2a5915f533b57a065e9a045aa2ee03bc (opens in a new tab)