CVE-2026-80635

wifi: wcn36xx: fix OOB read from short trigger BA firmware response

HIGH
8.8
CVSS Score
Published: August 28, 2026 at 06:48 AM UTC
Updated: August 29, 2026 at 07:16 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH8.8
Exploit prediction
EPSS 0.4%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.7 ≤ v < 6.1.1784.7 ≤ v < 6.12.974.7 ≤ v < 6.18.404.7 ≤ v < 6.6.1454.7 ≤ v < 7.1.54.7 ≤ v < 7.216be1ac55944412e8d132b1db26f994b368c57424.7
Vendor states this is fixed in 04aba50212f9f274e1a726fb3873b5ce8da2d821 (fixed)
Vendor states this is fixed in af8f0ea1f0a3a5fb5ed2b8fed3f1501d644597ee (fixed)
Vendor states this is fixed in b5e6f21923ca89d90256e7346301056f6502691e (fixed)
Vendor states this is fixed in c07aa0534d50361183833e3803204044cf1d0476 (fixed)
Vendor states this is fixed in d0b57bcd0dac6e2c9a3e474ec280e7db0b3edf35 (fixed)
Vendor states this is fixed in d0cafe6ed8d1f6d0097eda31d85f5760d4f359c2 (fixed)
Vendor states this is fixed in 4.7 (unaffected)
Vendor states this is fixed in 6.1.178 (unaffected)
Vendor states this is fixed in 6.12.97 (unaffected)
Vendor states this is fixed in 6.18.40 (unaffected)
Vendor states this is fixed in 6.6.145 (unaffected)
Vendor states this is fixed in 7.1.5 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

8.8HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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