CVE-2026-43291
net: nfc: nci: Fix parameter validation for packet data
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).
INFO
Published Date :
May 8, 2026, 2:16 p.m.
Last Modified :
May 14, 2026, 9:08 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel to the latest version.
- Apply the patch for the NFC nci component.
- Recompile and install the updated kernel.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-43291.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-43291 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-43291
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-43291 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-43291 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
May. 14, 2026
Action Type Old Value New Value Added CWE CWE-908 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.17.3 up to (excluding) 6.18 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 6.19.6 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.15.195 up to (excluding) 5.15.202 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.18 up to (excluding) 6.18.16 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.1.156 up to (excluding) 6.1.165 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.12.53 up to (excluding) 6.12.75 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.6.112 up to (excluding) 6.6.128 Added Reference Type kernel.org: https://git.kernel.org/stable/c/3b91160e9a91b5a2662875417dc42dc5b0bf03ea Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/498fc5d0d650c77e87fcc73808d4f43240c21805 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/571dcbeb8e635182bb825ae758399831805693c2 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a24a8a582da4426b2042e510a1080df84083b51d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/ad058a4317db7fdb3f09caa6ed536d24a62ce6a0 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/c692db813a7e3b7c3c17d6e9a3ad2a018bf1142b Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f5218426f765eee22e178df9c126d974792fb6a5 Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 11, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 08, 2026
Action Type Old Value New Value Added 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). Added Reference https://git.kernel.org/stable/c/3b91160e9a91b5a2662875417dc42dc5b0bf03ea Added Reference https://git.kernel.org/stable/c/498fc5d0d650c77e87fcc73808d4f43240c21805 Added Reference https://git.kernel.org/stable/c/571dcbeb8e635182bb825ae758399831805693c2 Added Reference https://git.kernel.org/stable/c/a24a8a582da4426b2042e510a1080df84083b51d Added Reference https://git.kernel.org/stable/c/ad058a4317db7fdb3f09caa6ed536d24a62ce6a0 Added Reference https://git.kernel.org/stable/c/c692db813a7e3b7c3c17d6e9a3ad2a018bf1142b Added Reference https://git.kernel.org/stable/c/f5218426f765eee22e178df9c126d974792fb6a5