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CVE-2026-74408

wifi: ath9k: fix OOB access from firmware tx status queue ID

HIGH
8.8
CVSS Score
Published: August 15, 2026 at 05:59 AM UTC
Updated: October 16, 2026 at 08:17 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH8.8
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: fix OOB access from firmware tx status queue ID ath_tx_edma_tasklet() accesses sc->tx.txq[ts.qid] where ts.qid is a 4-bit hardware field (0-15), but the txq array only has ATH9K_NUM_TX_QUEUES (10) entries. A qid >= 10 causes an OOB array access. Add a bounds check on ts.qid before using it as an array index.

Affected

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

Linux Kernel· Linux
90%
3.1fce041beb03f93c7a771f0b4b6c45bb71ef90901
Vendor states this is fixed in 336d4c8cd9b1646060ee690c881d465dfc09c6c0 (fixed)
Vendor states this is fixed in 46ca1451f61b598f45cb5259e066d305444d95fc (fixed)
Vendor states this is fixed in 5435fd3edcb11c7cc4002847c83e9a50b49284dc (fixed)
Vendor states this is fixed in 734db72d55ca578a344dfa33e30145032c074b25 (fixed)
Vendor states this is fixed in 7ce2f118a2389e8f0a64068c6fe7cc7d40639be0 (fixed)
Vendor states this is fixed in a9e055ac62cb3fcea262d4b687ec73eed82b3379 (fixed)
Vendor states this is fixed in f5931d06b45ed402572bfe5832fff15864ef5481 (fixed)
Vendor states this is fixed in fb11083db9d7d6fb8f98bbba1cbfcf3fb7b4bf54 (fixed)
Vendor states this is fixed in 3.1 (unaffected)
Vendor states this is fixed in 5.10.261 (unaffected)
Vendor states this is fixed in 5.15.212 (unaffected)
Vendor states this is fixed in 6.1.178 (unaffected)
Vendor states this is fixed in 6.12.97 (unaffected)
Vendor states this is fixed in 6.18.40 (unaffected)
Vendor states this is fixed in 6.6.145 (unaffected)
Vendor states this is fixed in 7.1.5 (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.

References (8)

Source: cverecord
https://git.kernel.org/stable/c/fb11083db9d7d6fb8f98bbba1cbfcf3fb7b4bf54
Source: cverecord
https://git.kernel.org/stable/c/734db72d55ca578a344dfa33e30145032c074b25
Source: cverecord
https://git.kernel.org/stable/c/f5931d06b45ed402572bfe5832fff15864ef5481
Source: cverecord
https://git.kernel.org/stable/c/46ca1451f61b598f45cb5259e066d305444d95fc
Source: cverecord
https://git.kernel.org/stable/c/a9e055ac62cb3fcea262d4b687ec73eed82b3379
Source: cverecord
https://git.kernel.org/stable/c/5435fd3edcb11c7cc4002847c83e9a50b49284dc
Source: cverecord
https://git.kernel.org/stable/c/336d4c8cd9b1646060ee690c881d465dfc09c6c0
Source: cverecord
https://git.kernel.org/stable/c/7ce2f118a2389e8f0a64068c6fe7cc7d40639be0

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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