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CVE-2026-93064: wifi: iwlwifi: mvm: fix off-by-one in TXF key sanitiser

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: fix off-by-one in TXF key sanitiser iwl_mvm_frob_txf_key_iter() 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 products

• Linux kernel: 5.16 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1af000d75b1c96f7cbdf23f14d0ee1c51b12f8e6
• https://git.kernel.org/stable/c/2a77cb320e3998afa5e1ed0e95908b226aae9ed6
• https://git.kernel.org/stable/c/4c582ed61325135f841ca93667d7551a8e31e58d
• https://git.kernel.org/stable/c/5bcc933c6d47d795dab27458b9001c2d97130fd3
• https://git.kernel.org/stable/c/c9d8641aea01c3b2516483e128e1f557cfbcf44a
• https://git.kernel.org/stable/c/f6a6c01cbc046f68e6916a7e047a1bc881c8c9ab

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