High 8.3Published May 8, 2026

CVE-2026-43291net: nfc: nci: Fix parameter validation for packet data

Updated under an hour ago (Oct 27, 2026, 12:50 PM ET)

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Exploited in the last 30 days

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: 8.3 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 8fcc7315a10a84264e55bb65ede10f0af20a983f before a24a8a582da4426b2042e510a1080df84083b51d; from bfdda0123dde406dbff62e7e9136037e97998a15 before f5218426f765eee22e178df9c126d974792fb6a5; from 0ba68bea1e356f466ad29449938bea12f5f3711f before ad058a4317db7fdb3f09caa6ed536d24a62ce6a0; 74837bca0748763a77f77db47a0bdbe63b347628 builds before 3b91160e9a91b5a2662875417dc42dc5b0bf03ea; from 9c328f54741bd5465ca1dc717c84c04242fac2e1 before c692db813a7e3b7c3c17d6e9a3ad2a018bf1142b; from 9c328f54741bd5465ca1dc717c84c04242fac2e1 before 498fc5d0d650c77e87fcc73808d4f43240c21805; from 9c328f54741bd5465ca1dc717c84c04242fac2e1 before 571dcbeb8e635182bb825ae758399831805693c2; c395d1e548cc68e84584ffa2e3ca9796a78bf7b9; and 5 more ranges	CNA record
linux linux_kernel linux:linux_kernel	from 5.15.195 before 5.15.202; from 6.1.156 before 6.1.165; from 6.6.112 before 6.6.128; from 6.12.53 before 6.12.75; from 6.17.3 before 6.18; from 6.18 before 6.18.16; from 6.19 before 6.19.6	NVD

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.