CVE-2026-80801: Linux kernel · nfc: microread: validate target discovery payload 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 15% 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 to validate target discovery payload lengths in the microread component. Users should update to the latest Linux kernel version containing this fix. Patch status is not explicitly confirmed in the provided data; check the vendor advisory for current remediation guidance.
Description
In the Linux kernel, the following vulnerability has been resolved: nfc: microread: validate target discovery payload lengths microread_target_discovered() parses target discovery payloads from skb->data according to the HCI gate. The fixed field offsets and UID copies were checked only against the destination nfc_target buffers, not against the actual skb length. Validate that each gate-specific payload contains the fixed fields and UID bytes before reading or copying them.
References
- nvd.nist.gov/vuln/detail/CVE-2026-80801 (opens in a new tab)
- git.kernel.org/stable/c/18f02354ed229b8e4561b580812d026e7eb29c85 (opens in a new tab)
- git.kernel.org/stable/c/25519469972ef57c3edb1805dabd6c5612b90211 (opens in a new tab)
- git.kernel.org/stable/c/92a6f0201bb68391b5eba1b3f330af007d7323b6 (opens in a new tab)
- git.kernel.org/stable/c/953963b9ac5eecbb316617d337bfaa3d731e3c5e (opens in a new tab)
- git.kernel.org/stable/c/c6de4241f2efbbab286efbb84a9c7190298b3052 (opens in a new tab)
- git.kernel.org/stable/c/cb298672282421159e53ab311fe49d204c8a52da (opens in a new tab)
- git.kernel.org/stable/c/d0902a7c454326c6384c614226ab8987f3fd425d (opens in a new tab)
- git.kernel.org/stable/c/dabfa26a208e56f4d8dbf26fddc48f188bdb0649 (opens in a new tab)
- git.kernel.org/stable/c/e6397fe7b8b5ef18e051f49612d40ff476c5f7d9 (opens in a new tab)
- ubuntu.com/security/CVE-2026-80801 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-80801 (opens in a new tab)
- git.kernel.org/linus/25519469972ef57c3edb1805dabd6c5612b90211 (opens in a new tab)