CVE-2026-31779

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux5ac54afd4d97ad8d94fe250c83b1924eb6d2268c < f6abac936a0dfd31d6c3e49205ec0ee75a8f887faffected
LinuxLinux5ac54afd4d97ad8d94fe250c83b1924eb6d2268c < ffbed27ba15ef80d1c622eeedbfef03e501ae134affected
LinuxLinux5ac54afd4d97ad8d94fe250c83b1924eb6d2268c < e67d8c626ace80b0fa2b48c8ec0a46b508c93442affected
LinuxLinux5ac54afd4d97ad8d94fe250c83b1924eb6d2268c < dd90880eb5ec5442b37eb2b95688f4a63f4883e3affected
LinuxLinux5ac54afd4d97ad8d94fe250c83b1924eb6d2268c < ca0e9491b98ca4c5b44204b0b3dd8062a3b5fba2affected
LinuxLinux5ac54afd4d97ad8d94fe250c83b1924eb6d2268c < 744fabc338e87b95c4d1ff7c95bc8c0f834c6d99affected
LinuxLinux6.1affected
LinuxLinux0 < 6.1unaffected
LinuxLinux6.1.168 <= 6.1.*unaffected
LinuxLinux6.6.134 <= 6.6.*unaffected
LinuxLinux6.12.81 <= 6.12.*unaffected
LinuxLinux6.18.22 <= 6.18.*unaffected
LinuxLinux6.19.12 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References