CVE-2026-43291

net: nfc: nci: Fix parameter validation for packet data

CVSS 8.3 HIGHEPSS 0.3%

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.3EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

08 May 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

In the Linux kernel, the following vulnerability has been resolved: net: nfc: nci: Fix parameter validation for packet data Since commit 9c328f54741b ("net: nfc: nci: Add parameter validation for packet data") communication with nci nfc chips is not working any more. The mentioned commit tries to fix access of uninitialized data, but failed to understand that in some cases the data packet is of variable length and can therefore not be compared to the maximum packet length given by the sizeof(struct).

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H

Affected products

Linux · Linux

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References

https://git.kernel.org/stable/c/3b91160e9a91b5a2662875417dc42dc5b0bf03ea https://git.kernel.org/stable/c/498fc5d0d650c77e87fcc73808d4f43240c21805 https://git.kernel.org/stable/c/571dcbeb8e635182bb825ae758399831805693c2 https://git.kernel.org/stable/c/a24a8a582da4426b2042e510a1080df84083b51d https://git.kernel.org/stable/c/ad058a4317db7fdb3f09caa6ed536d24a62ce6a0 https://git.kernel.org/stable/c/c692db813a7e3b7c3c17d6e9a3ad2a018bf1142b https://git.kernel.org/stable/c/f5218426f765eee22e178df9c126d974792fb6a5