CVE-2026-93281: Linux kernel · wifi: rtw89: fix HE extended capability length check
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 13:47 UTC
Rated by Threat Radar · 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.
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
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
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].
References
- ubuntu.com/security/CVE-2026-93281 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-93281 (opens in a new tab)
- git.kernel.org/stable/c/bddbd1de765bf6ddc0473ad683910eb3a2a92a43 (opens in a new tab)
- git.kernel.org/stable/c/655c4401c18d735dbaf2cc172ff4f626b3a896a0 (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/eddf53f1edb0cf7f302bd15cdb47cca90948c205 (opens in a new tab)
- git.kernel.org/stable/c/2aba608a86e9b099c9af2ea70b620552dee2b628 (opens in a new tab)