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CVE-2026-80635

HIGHCVSS 8.8/10EPSS 0.17%

Last modified

CVE-2026-80635 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
8.8/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.17%

6.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 16be1ac55944412e8d132b1db26f994b368c5742, < 04aba50212f9f274e1a726fb3873b5ce8da2d821; >= 16be1ac55944412e8d132b1db26f994b368c5742, < c07aa0534d50361183833e3803204044cf1d0476; >= 16be1ac55944412e8d132b1db26f994b368c5742, < d0b57bcd0dac6e2c9a3e474ec280e7db0b3edf35; >= 16be1ac55944412e8d132b1db26f994b368c5742, < af8f0ea1f0a3a5fb5ed2b8fed3f1501d644597ee; >= 16be1ac55944412e8d132b1db26f994b368c5742, < d0cafe6ed8d1f6d0097eda31d85f5760d4f359c2; >= 16be1ac55944412e8d132b1db26f994b368c5742, < b5e6f21923ca89d90256e7346301056f6502691e
LinuxLinux4.7

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-80635?
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.
How severe is CVE-2026-80635?
CVE-2026-80635 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-80635?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST