GHSA-g6c9-vf65-ggggHighCVSS 7.8
In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Fix bandwidth...
🔗 CVE IDs covered (1)
📋 Description
In the Linux kernel, the following vulnerability has been resolved:
thunderbolt: Fix bandwidth group reservation indexing
Valid bandwidth group IDs range from 1 through MAX_GROUPS, while Group ID 0 is reserved. tb_consumed_dp_bandwidth() uses the Group ID directly to index its local group_reserved[] array.
The array currently has MAX_GROUPS entries, so its valid indices are 0 through MAX_GROUPS - 1. Group ID MAX_GROUPS therefore accesses one element past the end, and the final group's reserved bandwidth is not included when the array is summed.
Give group_reserved[] MAX_GROUPS + 1 entries so direct Group ID indexing covers the reserved ID 0 and valid IDs 1 through MAX_GROUPS.
🔗 References (6)
- https://nvd.nist.gov/vuln/detail/CVE-2026-80736
- https://git.kernel.org/stable/c/0a8c9ed4f166216642a8c084f0de415169c88088
- https://git.kernel.org/stable/c/0bfb67ba366cd68d1d0ad935760577bae1d5df27
- https://git.kernel.org/stable/c/9977321835c7ae71d12a43bed7baa5bd514d01c3
- https://git.kernel.org/stable/c/d2ee4d47aacbd2ba456092eeec670dba35fde291
- https://github.com/advisories/GHSA-g6c9-vf65-gggg