CVE-2026-80763

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux26afbd826ee326e63a334c37fd45e82e50a615ec < 9e05783d0bb96a7b853cc058a7c7de2dc4a62154affected
LinuxLinux26afbd826ee326e63a334c37fd45e82e50a615ec < 26741d178f31932c9018b36b7953e6dc391436a4affected
LinuxLinux26afbd826ee326e63a334c37fd45e82e50a615ec < a34df5c4a439cfc04565fa5be608ed1e53134f1faffected
LinuxLinux26afbd826ee326e63a334c37fd45e82e50a615ec < e3f82e8f2a5915f533b57a065e9a045aa2ee03bcaffected
LinuxLinux26afbd826ee326e63a334c37fd45e82e50a615ec < d83ecb7b96105d932dabaa56ccd7418c25fb7cbbaffected
LinuxLinux26afbd826ee326e63a334c37fd45e82e50a615ec < 6fc540e835dddb518cef3ff522b780f701cd03dfaffected
LinuxLinux26afbd826ee326e63a334c37fd45e82e50a615ec < 0acd4eeb4b225b9bebbf9ef96cc10cdd79b94899affected
LinuxLinux6.0affected
LinuxLinux0 < 6.0unaffected
LinuxLinux6.1.187 <= 6.1.*unaffected
LinuxLinux6.6.154 <= 6.6.*unaffected
LinuxLinux6.12.106 <= 6.12.*unaffected
LinuxLinux6.18.47 <= 6.18.*unaffected
LinuxLinux7.1.11 <= 7.1.*unaffected
LinuxLinux7.2.1 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References