CVE-2026-31779

wifi: iwlwifi: mvm: fix potential out-of-bounds read in iwl_mvm_nd_match_info_handler()

State: Published
Severity: 8.1 High
Published: May 1, 2026
Updated: Oct 19, 2026
Reserved: Mar 9, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H	Linux

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
LinuxLinux	5ac54afd4d97ad8d94fe250c83b1924eb6d2268c to before f6abac936a0dfd31d6c3e49205ec0ee75a8f887fAffected 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c to before ffbed27ba15ef80d1c622eeedbfef03e501ae134Affected 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c to before e67d8c626ace80b0fa2b48c8ec0a46b508c93442Affected 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c to before dd90880eb5ec5442b37eb2b95688f4a63f4883e3Affected 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c to before ca0e9491b98ca4c5b44204b0b3dd8062a3b5fba2Affected 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c to before 744fabc338e87b95c4d1ff7c95bc8c0f834c6d99Affected
LinuxLinux	6.1Affected before 6.1Not affected 6.1.168 through 6.1.Not affected 6.6.134 through 6.6.Not affected 6.12.81 through 6.12.Not affected 6.18.22 through 6.18.Not affected 6.19.12 through 6.19.*Not affected 7.0 and laterNot affected

Product

Versions

LinuxLinux

5ac54afd4d97ad8d94fe250c83b1924eb6d2268c to before f6abac936a0dfd31d6c3e49205ec0ee75a8f887fAffected
5ac54afd4d97ad8d94fe250c83b1924eb6d2268c to before ffbed27ba15ef80d1c622eeedbfef03e501ae134Affected
5ac54afd4d97ad8d94fe250c83b1924eb6d2268c to before e67d8c626ace80b0fa2b48c8ec0a46b508c93442Affected
5ac54afd4d97ad8d94fe250c83b1924eb6d2268c to before dd90880eb5ec5442b37eb2b95688f4a63f4883e3Affected
5ac54afd4d97ad8d94fe250c83b1924eb6d2268c to before ca0e9491b98ca4c5b44204b0b3dd8062a3b5fba2Affected
5ac54afd4d97ad8d94fe250c83b1924eb6d2268c to before 744fabc338e87b95c4d1ff7c95bc8c0f834c6d99Affected

LinuxLinux

6.1Affected
before 6.1Not affected
6.1.168 through 6.1.*Not affected
6.6.134 through 6.6.*Not affected
6.12.81 through 6.12.*Not affected
6.18.22 through 6.18.*Not affected
6.19.12 through 6.19.*Not affected
7.0 and laterNot affected

References

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