wifi: iwlwifi: mvm: validate TX_CMD response layout
CVE-2026-93793 · published 24 Sept 2026
How serious is it
- Severity: high, CVSS score 8.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-93793?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
- Linux Linux: 8ca151b568b67a7b72dcfc6ee6ea7c107ddd795c to < 5e871c03506c529d5fe372d099c1ad1465c7bc38, 8ca151b568b67a7b72dcfc6ee6ea7c107ddd795c to < fc14f5fe8a4374ed1088cfbddc1dae4d16c9935b, 8ca151b568b67a7b72dcfc6ee6ea7c107ddd795c to < 4d942dfc13aec393e003ab28ff58db744c26e6eb, 8ca151b568b67a7b72dcfc6ee6ea7c107ddd795c to < 8d70881707b47353359df57df12f6de67fdacdd2
- Linux Linux: 3.9
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
In the Linux kernel, the following vulnerability has been resolved:
wifi: iwlwifi: mvm: validate TX_CMD response layout
TX_CMD parsing uses frame_count to walk status entries and then
read the trailing SCD SSN. Make the minimum-length check follow
that exact runtime layout calculation before parsing the payload.
For new TX API, reject TX_CMD responses with frame_count != 1 and
warn/return in the aggregation handler to document that aggregated
accounting is expected via BA notifications.
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- git.kernel.org/stable/c/5e871c03506c529d5fe372d099c1ad1465c7bc38
- git.kernel.org/stable/c/fc14f5fe8a4374ed1088cfbddc1dae4d16c9935b
- git.kernel.org/stable/c/4d942dfc13aec393e003ab28ff58db744c26e6eb
- git.kernel.org/stable/c/8d70881707b47353359df57df12f6de67fdacdd2
Merged from CVE List. Last updated 26 Oct 2026. All vulnerabilities · RSS · JSON