CVE-2026-80573: Linux kernel · Input: iforce – validate input packet lengths
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 12:55 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 26 Aug 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 implemented in the Linux kernel to address this issue by validating input packet lengths and rejecting zero-length USB transfers. Users should update their Linux kernel to a version that includes this fix once available. Patch status is not explicitly confirmed in the provided data; therefore, check the vendor advisory or Linux kernel mailing lists for the official patch and update guidance.
Description
In the Linux kernel, the following vulnerability has been resolved: Input: iforce - validate input packet lengths iforce_process_packet() reads fixed fields from joystick, wheel and status packets without first checking their lengths. In particular, the shared hats-and-buttons helper unconditionally reads data[6]. The status tail is a sequence of 16-bit effect addresses, but an incomplete final address is also consumed. A successful zero-length USB URB additionally reads the packet ID before the common parser is called. Reject the zero-length USB transfer, require the seven-byte joystick and wheel prefixes and the two-byte status prefix, and consume only complete status-tail addresses.
References
- nvd.nist.gov/vuln/detail/CVE-2026-80573 (opens in a new tab)
- git.kernel.org/stable/c/0ec411167655ef3ff3e84f6af685e962aff9a75b (opens in a new tab)
- git.kernel.org/stable/c/2c083ab16e33fbff3ab8c752fbf8118ed3dd31ce (opens in a new tab)
- git.kernel.org/stable/c/5232529eaf57f08fe37484e301579a1915b93d14 (opens in a new tab)
- git.kernel.org/stable/c/5751c781d3c97ab6ce0e2a966156ed882152c415 (opens in a new tab)
- git.kernel.org/stable/c/609be40988898a4d75225ade0ea5c1734757dd33 (opens in a new tab)
- git.kernel.org/stable/c/84e5cb517f445dadbd5f8bf4ec513540e51f9c36 (opens in a new tab)
- git.kernel.org/stable/c/a64a8b6b31cd669f0449138e53cc2592d454ccf1 (opens in a new tab)
- git.kernel.org/stable/c/e73d7a7d913d89141321f5f3f16343ecc200d152 (opens in a new tab)
- ubuntu.com/security/CVE-2026-80573 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-80573 (opens in a new tab)