CVE-2026-93064: wifi: iwlwifi: mvm: fix off-by-one in TXF key sanitiser
In the Linux kernel, the following vulnerability has been resolved:
wifi: iwlwifi: mvm: fix off-by-one in TXF key sanitiser
iwlmvmfrobtxfkeyiter() tracks the last matched byte position in loop variable 'i'. When a full key match is found (match == keylen), 'i' points at the last byte of the matched key. The memset start offset should therefore be i + 1 - keylen, not i - keylen; the current code zeroes one byte before the match and leaves the final key byte un-sanitised.
Affected Software
Event History
Frequently Asked Questions
Are specific affected or fixed Linux kernel versions identified?
No version ranges are provided. The available remediation references are three stable-kernel commits.
Does the available information identify attacker prerequisites or default-configuration exposure?
No. It does not state how an attacker could trigger the condition, what access they would need, or whether a default configuration is affected.
How can an administrator assess whether their kernel contains the issue?
Review the implementation of iwl_mvm_frob_txf_key_iter() or compare the kernel source against the referenced stable commits. The vulnerable behavior uses i - keylen as the memset offset after a full key match, rather than i + 1 - keylen.