SEPTEMBER 18, 2026
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Case File

CVE-2026-80635

HIGH · CVSS 8.8 EPSS 0.26%

Source: NVD + CISA KEV + EPSS · Published 2026-08-28 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

The vulnerability affects the Linux kernel's handling of firmware responses in the wcn36xx Wi-Fi driver, where insufficient validation allows for an out-of-bounds read of stale heap data. This could lead to corruption of the Block Acknowledgment (BA) session state, potentially impacting system stability and security. Linux system administrators and developers utilizing the affected Wi-Fi driver should prioritize applying the fix to mitigate potential exploitation risks.

CVE
CVE-2026-80635
Severity
HIGH
CVSS
8.8
EPSS
0.26%
Linux

Original NVD Description

In the Linux kernel, the following vulnerability has been resolved: wifi: wcn36xx: fix OOB read from short trigger BA firmware response The firmware response length is only checked against sizeof(*rsp) (20 bytes), but when candidate_cnt >= 1, a 22-byte candidate struct is read at buf + 20 without verifying the response contains it. This causes an out-of-bounds read of stale heap data, corrupting the BA session state. Add validation that the response includes the candidate data.