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CVE-2026-80763

Unknown

Last modified

CVE-2026-80763 is a vulnerability of currently unknown severity. 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.

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 26afbd826ee326e63a334c37fd45e82e50a615ec, < 9e05783d0bb96a7b853cc058a7c7de2dc4a62154; >= 26afbd826ee326e63a334c37fd45e82e50a615ec, < 26741d178f31932c9018b36b7953e6dc391436a4; >= 26afbd826ee326e63a334c37fd45e82e50a615ec, < a34df5c4a439cfc04565fa5be608ed1e53134f1f; >= 26afbd826ee326e63a334c37fd45e82e50a615ec, < e3f82e8f2a5915f533b57a065e9a045aa2ee03bc; >= 26afbd826ee326e63a334c37fd45e82e50a615ec, < d83ecb7b96105d932dabaa56ccd7418c25fb7cbb; >= 26afbd826ee326e63a334c37fd45e82e50a615ec, < 6fc540e835dddb518cef3ff522b780f701cd03df; >= 26afbd826ee326e63a334c37fd45e82e50a615ec, < 0acd4eeb4b225b9bebbf9ef96cc10cdd79b94899
LinuxLinux6.0

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-80763?
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.
How severe is CVE-2026-80763?
Severity scoring for CVE-2026-80763 is pending analysis.
How do I fix CVE-2026-80763?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST