Out-of-bounds read in Linux kernel - CVE-2026-80763
Published: September 6, 2026
Vulnerability identifier: #VU147158
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80763
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform an out-of-bounds read.
The vulnerability exists due to an out-of-bounds read in the hci_cc_le_set_cig_params() handler when processing a truncated LE Set CIG Parameters response. A remote attacker can provide a malformed response with an advertised handle count that exceeds the remaining response data to perform an out-of-bounds read.
Affected software
Linux kernel
How to mitigate CVE-2026-80763
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/0acd4eeb4b225b9bebbf9ef96cc10cdd79b94899
- https://git.kernel.org/stable/c/26741d178f31932c9018b36b7953e6dc391436a4
- https://git.kernel.org/stable/c/6fc540e835dddb518cef3ff522b780f701cd03df
- https://git.kernel.org/stable/c/9e05783d0bb96a7b853cc058a7c7de2dc4a62154
- https://git.kernel.org/stable/c/a34df5c4a439cfc04565fa5be608ed1e53134f1f
- https://git.kernel.org/stable/c/d83ecb7b96105d932dabaa56ccd7418c25fb7cbb
- https://git.kernel.org/stable/c/e3f82e8f2a5915f533b57a065e9a045aa2ee03bc