CVE-2026-43291

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

HIGH
8.3
CVSS Score
Published: May 8, 2026 at 01:11 PM UTC
Updated: August 5, 2026 at 01:24 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH8.3
Exploit prediction
EPSS 0.3%

Description

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).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≥ 6.17.35.15.195 ≤ v < 5.15.2026.1.156 ≤ v < 6.1.1656.12.53 ≤ v < 6.12.756.17.3 ≤ v < 6.186.18 ≤ v < 6.18.166.18 ≤ v < 6.19.66.18 ≤ v < 7.06.19 ≤ v < 6.19.66.6.112 ≤ v < 6.6.1280ba68bea1e356f466ad29449938bea12f5f3711f5.15.1956.1.1566.12.536.17.36.186.6.11274837bca0748763a77f77db47a0bdbe63b3476288fcc7315a10a84264e55bb65ede10f0af20a983f9c328f54741bd5465ca1dc717c84c04242fac2e1bfdda0123dde406dbff62e7e9136037e97998a15c395d1e548cc68e84584ffa2e3ca9796a78bf7b9
Vendor states this is fixed in 3b91160e9a91b5a2662875417dc42dc5b0bf03ea (fixed)
Vendor states this is fixed in 498fc5d0d650c77e87fcc73808d4f43240c21805 (fixed)
Vendor states this is fixed in 571dcbeb8e635182bb825ae758399831805693c2 (fixed)
Vendor states this is fixed in a24a8a582da4426b2042e510a1080df84083b51d (fixed)
Vendor states this is fixed in ad058a4317db7fdb3f09caa6ed536d24a62ce6a0 (fixed)
Vendor states this is fixed in c692db813a7e3b7c3c17d6e9a3ad2a018bf1142b (fixed)
Vendor states this is fixed in f5218426f765eee22e178df9c126d974792fb6a5 (fixed)
Vendor states this is fixed in 5.15.202 (unaffected)
Vendor states this is fixed in 6.1.165 (unaffected)
Vendor states this is fixed in 6.12.75 (unaffected)
Vendor states this is fixed in 6.18 (unaffected)
Vendor states this is fixed in 6.18.16 (unaffected)
Vendor states this is fixed in 6.19.6 (unaffected)
Vendor states this is fixed in 6.6.128 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

CVSS

8.3HIGHLinux
Vector?

Quick Info

StatusANALYZED
CWE
CWE-908

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