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Vulnerability record · CVE-2026-31779 · published 1 May 2026

CVE-2026-31779: Linux kernel out-of-bounds read vulnerability

Linux · Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: fix potential out-of-bounds read in iwl_mvm_nd_match_info_handler() The memcpy function assumes the dynamic array notif->matches is at least as large as the number of bytes to copy. Otherwise, results->matches may contain unwanted data. To guarantee safety, extend the validation in one of the checks to ensure sufficient packet length. Found by Linux Verification Center (linuxtesting.org) with SVACE.

8.1 CVSS 3.1 High EPSS 0.41% · top 67.4% CWE-125 · Out-of-bounds read
8.1CVSS 3.1 base score
0.41%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: fix potential out-of-bounds read in iwl_mvm_nd_match_info_handler() The memcpy function assumes the dynamic array notif->matches is at least as large as the number of bytes to copy. Otherwise, results->matches may contain unwanted data. To guarantee safety, extend the validation in one of the checks to ensure sufficient packet length. Found by Linux Verification Center (linuxtesting.org) with SVACE.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/744fabc338e87b95c4d1ff7c95bc8c0f834c6d99 Patch
https://git.kernel.org/stable/c/ca0e9491b98ca4c5b44204b0b3dd8062a3b5fba2 Patch
https://git.kernel.org/stable/c/dd90880eb5ec5442b37eb2b95688f4a63f4883e3 Patch
https://git.kernel.org/stable/c/e67d8c626ace80b0fa2b48c8ec0a46b508c93442 Patch
https://git.kernel.org/stable/c/f6abac936a0dfd31d6c3e49205ec0ee75a8f887f Patch
https://git.kernel.org/stable/c/ffbed27ba15ef80d1c622eeedbfef03e501ae134 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-31779), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.