What’s Vulnerable › Vulnerabilities

CVE-2026-80803: nfc: digital: clamp SENSF_RES length to the destination buffer

• 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: digital: clamp SENSF_RES length to the destination buffer digital_in_recv_sensf_res() memcpy()s resp->len bytes from a remote NFC-F device response into the NFC_SENSF_RES_MAXSIZE-byte target.sensf_res field without an upper-bound check. A nearby malicious NFC-F device can send an oversized SENSF_RES response to overflow the stack-local struct nfc_target. Clamp resp->len to NFC_SENSF_RES_MAXSIZE before the copy. Found by 0sec automated security-research tooling (https://0sec.ai).

Affected products

• Linux kernel: 3.13 — 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/31aa28ed732f66ab83c40ef53d99791be69b85c4
• https://git.kernel.org/stable/c/344a56d7c8e0f3cbaff0bcb1bcd95a1a1db24b16
• https://git.kernel.org/stable/c/4e942da2869bcd646353eef706b7dd82efeb9db5
• https://git.kernel.org/stable/c/6afb29751ee731e7f7a96feb8a15f91441e552ba
• https://git.kernel.org/stable/c/a1ef9bddfbb3ae42b036c5aa16cf386d78db70b6
• https://git.kernel.org/stable/c/a56773e649ea99b344d6bbaf90f34c8e3fadef5d
• https://git.kernel.org/stable/c/af4c0606f743e009254a8d252096855335ade85d
• https://git.kernel.org/stable/c/d0756a98277e383c26fead988a96c91f0781cd7f
• https://git.kernel.org/stable/c/e886c63d2ca7108826076989103a1ffa8a0bb8f4

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