🔐 CVE Alert

CVE-2026-80736

UNKNOWN 0.0

thunderbolt: Fix bandwidth group reservation indexing

CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th

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.

Vendor linux
Product linux
Ecosystems
Industries
Technology
Published Sep 3, 2026
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Affected Versions

Linux / Linux
52a4490e89d7c4effe613d8dffd2ac0a2a786bd7 < 0bfb67ba366cd68d1d0ad935760577bae1d5df27 52a4490e89d7c4effe613d8dffd2ac0a2a786bd7 < 9977321835c7ae71d12a43bed7baa5bd514d01c3 52a4490e89d7c4effe613d8dffd2ac0a2a786bd7 < 0a8c9ed4f166216642a8c084f0de415169c88088 52a4490e89d7c4effe613d8dffd2ac0a2a786bd7 < d2ee4d47aacbd2ba456092eeec670dba35fde291
Linux / Linux
6.9

References

NVD ↗ CVE.org ↗ EPSS Data ↗
git.kernel.org: https://git.kernel.org/stable/c/0bfb67ba366cd68d1d0ad935760577bae1d5df27 git.kernel.org: https://git.kernel.org/stable/c/9977321835c7ae71d12a43bed7baa5bd514d01c3 git.kernel.org: https://git.kernel.org/stable/c/0a8c9ed4f166216642a8c084f0de415169c88088 git.kernel.org: https://git.kernel.org/stable/c/d2ee4d47aacbd2ba456092eeec670dba35fde291