CVE-2026-93281: Linux kernel · wifi: rtw89: fix HE extended capability length check
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in f132fc01b359a0f7d81fe13d769ea4e7c4baa66e : update Linux kernel when convenient.
Data as of 26 Oct 2026, 14:05 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in f132fc01b359a0f7d81fe13d769ea4e7c4baa66e, f2a01deff7d0d5cc3dcbf2358dac113979303c8e, eddf53f1edb0cf7f302bd15cdb47cca90948c205 +3
Exploitation evidence
Disclosed: evidence found.
CVE published 24 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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AI-suggested
A fix is available and has been applied in the Linux kernel. Users should update to a fixed kernel version that includes the patch identified by the provided commit hashes. No additional mitigation is required beyond applying the official fix.
Description
A vulnerability in the Linux kernel's rtw89 WiFi driver involves an incorrect length check for HE extended capabilities. The function rtw89_mac_check_he_obss_narrow_bw_ru_iter() reads byte 10 of the extended capability data but only requires a data length of at least 10 bytes, whereas byte 10 requires at least 11 bytes. This flaw has been fixed by enforcing a minimum data length of 11 bytes before accessing byte 10.
References
- git.kernel.org/stable/c/eddf53f1edb0cf7f302bd15cdb47cca90948c205 (opens in a new tab)
- git.kernel.org/stable/c/655c4401c18d735dbaf2cc172ff4f626b3a896a0 (opens in a new tab)
- git.kernel.org/stable/c/bddbd1de765bf6ddc0473ad683910eb3a2a92a43 (opens in a new tab)
- git.kernel.org/stable/c/f2a01deff7d0d5cc3dcbf2358dac113979303c8e (opens in a new tab)
- git.kernel.org/stable/c/f132fc01b359a0f7d81fe13d769ea4e7c4baa66e (opens in a new tab)
- git.kernel.org/stable/c/2aba608a86e9b099c9af2ea70b620552dee2b628 (opens in a new tab)