What’s Vulnerable › Vulnerabilities

CVE-2026-80801: nfc: microread: validate target discovery payload lengths

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-04 · updated 2026-10-19

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.

Affected products

• Linux kernel: 3.9 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/18f02354ed229b8e4561b580812d026e7eb29c85
• https://git.kernel.org/stable/c/25519469972ef57c3edb1805dabd6c5612b90211
• https://git.kernel.org/stable/c/92a6f0201bb68391b5eba1b3f330af007d7323b6
• https://git.kernel.org/stable/c/953963b9ac5eecbb316617d337bfaa3d731e3c5e
• https://git.kernel.org/stable/c/c6de4241f2efbbab286efbb84a9c7190298b3052
• https://git.kernel.org/stable/c/cb298672282421159e53ab311fe49d204c8a52da
• https://git.kernel.org/stable/c/d0902a7c454326c6384c614226ab8987f3fd425d
• https://git.kernel.org/stable/c/dabfa26a208e56f4d8dbf26fddc48f188bdb0649
• https://git.kernel.org/stable/c/e6397fe7b8b5ef18e051f49612d40ff476c5f7d9

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