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VULNERABILITIES

CVE-2026-80736 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: kernel.orgCVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://git.kernel.org/stable/c/0a8c9ed4f166216642a8c084f0de415169c88088 kernel.org
https://git.kernel.org/stable/c/0bfb67ba366cd68d1d0ad935760577bae1d5df27 kernel.org
https://git.kernel.org/stable/c/9977321835c7ae71d12a43bed7baa5bd514d01c3 kernel.org
https://git.kernel.org/stable/c/d2ee4d47aacbd2ba456092eeec670dba35fde291 kernel.org

Weakness Enumeration

No weakness enumeration is available for this CVE.

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-80736
NVD Published Date:
Sep 3, 2026
NVD Last Modified:
Sep 4, 2026
Source:
kernel.org
CVE-2026-80736 Details - Not Deferred