8.8

CVE-2026-74408: wifi: ath9k: fix OOB access from firmware tx status queue ID

Received
AliasesUBUNTU-CVE-2026-74408DEBIAN-CVE-2026-74408
Published 15-08-2026Last modified 16-10-2026

Vulnerability summary

CVE-2026-74408 is a high (CVSS 8.8) vulnerability in linux. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 35.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 8.8, adjacent network); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.41%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 16 · Related 16
SUSE-SU-2026:4892-1USN-8781-1USN-8875-1USN-8875-2USN-8876-1USN-8877-1

Timeline

  1. 15-08-2026
    PublishedVulnerability first disclosed.
  2. 16-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.41%

Chance of exploitation in the next 30 days

Percentile

36%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.41% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: adjacent network, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu169 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-147.147 | < 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1067.70 | < 7.0.0-1014.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.180-1 | < 6.12.100-1 | < 7.1.5-1
Linux1 product
  • linux≥ fce041beb03f93c7a771f0b4b6c45bb71ef90901, < fb11083db9d7d6fb8f98bbba1cbfcf3fb7b4bf54 | ≥ fce041beb03f93c7a771f0b4b6c45bb71ef90901, < 734db72d55ca578a344dfa33e30145032c074b25 | ≥ fce041beb03f93c7a771f0b4b6c45bb71ef90901, < f5931d06b45ed402572bfe5832fff15864ef5481 | ≥ fce041beb03f93c7a771f0b4b6c45bb71ef90901, < 46ca1451f61b598f45cb5259e066d305444d95fc | ≥ fce041beb03f93c7a771f0b4b6c45bb71ef90901, < a9e055ac62cb3fcea262d4b687ec73eed82b3379 | ≥ fce041beb03f93c7a771f0b4b6c45bb71ef90901, < 5435fd3edcb11c7cc4002847c83e9a50b49284dc | ≥ fce041beb03f93c7a771f0b4b6c45bb71ef90901, < 336d4c8cd9b1646060ee690c881d465dfc09c6c0 | ≥ fce041beb03f93c7a771f0b4b6c45bb71ef90901, < 7ce2f118a2389e8f0a64068c6fe7cc7d40639be0 | 3.1

3 vendors · 171 products

References

27 links
Show all 27 references