CVE-2026-80814: Linux kernel · rndis_host: add overflow check in rndis_rx_fixup()
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 17:16 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 4 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.
AI-suggested
A fix has been applied to the Linux kernel source code to add the overflow check in rndis_rx_fixup(). Users and administrators should update their Linux kernel to a version that includes this fix. Patch status is not explicitly confirmed in the provided data; therefore, check the official Linux kernel advisories or vendor updates for the exact fixed versions and apply the update accordingly.
Description
In the Linux kernel, the following vulnerability has been resolved: rndis_host: add overflow check in rndis_rx_fixup() Add an overflow check to ensure that data_offset + data_len + 8 does not wrap, which would enable an OOB read of the USB data buffer.
References
- nvd.nist.gov/vuln/detail/CVE-2026-80814 (opens in a new tab)
- git.kernel.org/stable/c/10a6b99079697c5027b25352e882bdf54fef702a (opens in a new tab)
- git.kernel.org/stable/c/2140db1232af04b92faa6c4a2a40df6371ea89ff (opens in a new tab)
- git.kernel.org/stable/c/2ded89ca77fae1da6886fe94831acfe4d6aa80b1 (opens in a new tab)
- git.kernel.org/stable/c/8ca3bd404d076495ed0b274b65971c57b6fd5ac0 (opens in a new tab)
- git.kernel.org/stable/c/965a251f23ff69cfb4486974d4532e9bb551c7fc (opens in a new tab)
- git.kernel.org/stable/c/be7dc3650f799a253df4edd4fe230fc9ea4be063 (opens in a new tab)
- git.kernel.org/stable/c/c5398ce6db7647b7004d73a3102ccc25fb4bb596 (opens in a new tab)
- git.kernel.org/stable/c/e971d956353d382ee2185d71c47b538501a43f76 (opens in a new tab)
- git.kernel.org/stable/c/f8e6fde5db87f855e99b200e392467274f0eb9d7 (opens in a new tab)
- ubuntu.com/security/CVE-2026-80814 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-80814 (opens in a new tab)
- git.kernel.org/linus/965a251f23ff69cfb4486974d4532e9bb551c7fc (opens in a new tab)