What’s Vulnerable › Vulnerabilities

CVE-2026-93281: wifi: rtw89: fix HE extended capability length check

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-24 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: fix HE extended capability length check rtw89_mac_check_he_obss_narrow_bw_ru_iter() reads extended capability byte 10, but rejects only datalen values below 10. Byte 10 requires at least 11 bytes. Require datalen >= 11 before reading data[10].

Affected products

• Linux kernel: 6.1 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/2aba608a86e9b099c9af2ea70b620552dee2b628
• https://git.kernel.org/stable/c/655c4401c18d735dbaf2cc172ff4f626b3a896a0
• https://git.kernel.org/stable/c/bddbd1de765bf6ddc0473ad683910eb3a2a92a43
• https://git.kernel.org/stable/c/eddf53f1edb0cf7f302bd15cdb47cca90948c205
• https://git.kernel.org/stable/c/f132fc01b359a0f7d81fe13d769ea4e7c4baa66e
• https://git.kernel.org/stable/c/f2a01deff7d0d5cc3dcbf2358dac113979303c8e

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