CVE-2026-93793

wifi: iwlwifi: mvm: validate TX_CMD response layout

HIGH
8.8
CVSS Score
Published: September 24, 2026 at 04:02 PM UTC
Updated: October 30, 2026 at 01:21 PM UTC
1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH8.8
Exploit prediction
EPSS 0.2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

3.98ca151b568b67a7b72dcfc6ee6ea7c107ddd795c
Vendor states this is fixed in 4d942dfc13aec393e003ab28ff58db744c26e6eb (fixed)
Vendor states this is fixed in 8d70881707b47353359df57df12f6de67fdacdd2 (fixed)
Vendor states this is fixed in fc14f5fe8a4374ed1088cfbddc1dae4d16c9935b (fixed)
Vendor states this is fixed in 3.9 (unaffected)
Vendor states this is fixed in 6.12.111 (unaffected)
Vendor states this is fixed in 6.18.53 (unaffected)
Vendor states this is fixed in 6.6.160 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

8.8HIGHLinux
Vector?

Quick Info

StatusRECEIVED

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card