CVE-2026-43291 Details
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).
A vulnerability in the Linux kernel's NFC NCI subsystem has been addressed. The issue arose after a previous commit intended to add parameter validation for packet data, which inadvertently disrupted communication with NCI NFC chips. The original fix failed to account for variable-length data packets, leading to improper validation against maximum packet lengths. This vulnerability affects the Linux kernel's stable releases.
Users can upgrade to the latest version of the Linux kernel, where this vulnerability has been fixed. Instructions for downloading the patched version are available on the official Linux kernel website.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/3b91160e9a91b5a2662875417dc42dc5b0bf03ea | kernel.org | Patch |
| https://git.kernel.org/stable/c/498fc5d0d650c77e87fcc73808d4f43240c21805 | kernel.org | Patch |
| https://git.kernel.org/stable/c/571dcbeb8e635182bb825ae758399831805693c2 | kernel.org | Patch |
| https://git.kernel.org/stable/c/a24a8a582da4426b2042e510a1080df84083b51d | kernel.org | Patch |
| https://git.kernel.org/stable/c/ad058a4317db7fdb3f09caa6ed536d24a62ce6a0 | kernel.org | Patch |
| https://git.kernel.org/stable/c/c692db813a7e3b7c3c17d6e9a3ad2a018bf1142b | kernel.org | Patch |
| https://git.kernel.org/stable/c/f5218426f765eee22e178df9c126d974792fb6a5 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-908 | Use of Uninitialized Resource | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.15.195, < 5.15.202 >= 6.1.156, < 6.1.165 >= 6.6.112, < 6.6.128 >= 6.12.53, < 6.12.75 >= 6.17.3, < 6.18 >= 6.18, < 6.18.16 >= 6.19, < 6.19.6 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 14, 2026 | Initial Analysis | [email protected] |
| May 11, 2026 | CVE Modified | kernel.org |
| May 8, 2026 | New CVE Received | kernel.org |