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

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于ath9k驱动ath_tx_edma_tasklet()函数在访问固件传输状态队列时未对队列ID进行边界检查，可能导致越界访问。

CVSS 8.8 · High EPSS 0.27% · P19

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux fce041beb03f93c7a771f0b4b6c45bb71ef90901< fb11083db9d7d6fb8f98bbba1cbfcf3fb7b4bf54 affected
fce041beb03f93c7a771f0b4b6c45bb71ef90901< 734db72d55ca578a344dfa33e30145032c074b25 affected
fce041beb03f93c7a771f0b4b6c45bb71ef90901< f5931d06b45ed402572bfe5832fff15864ef5481 affected
fce041beb03f93c7a771f0b4b6c45bb71ef90901< 46ca1451f61b598f45cb5259e066d305444d95fc affected
fce041beb03f93c7a771f0b4b6c45bb71ef90901< a9e055ac62cb3fcea262d4b687ec73eed82b3379 affected
fce041beb03f93c7a771f0b4b6c45bb71ef90901< 5435fd3edcb11c7cc4002847c83e9a50b49284dc affected
fce041beb03f93c7a771f0b4b6c45bb71ef90901< 336d4c8cd9b1646060ee690c881d465dfc09c6c0 affected
fce041beb03f93c7a771f0b4b6c45bb71ef90901< 7ce2f118a2389e8f0a64068c6fe7cc7d40639be0 affected
… +10 more rows
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I. Basic Information for CVE-2026-74408

Vulnerability Information
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Vulnerability Title
wifi: ath9k: fix OOB access from firmware tx status queue ID
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于ath9k驱动ath_tx_edma_tasklet()函数在访问固件传输状态队列时未对队列ID进行边界检查，可能导致越界访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux fce041beb03f93c7a771f0b4b6c45bb71ef90901 ~ fb11083db9d7d6fb8f98bbba1cbfcf3fb7b4bf54 -
Linux Linux 3.1 -

II. Public POCs for CVE-2026-74408

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III. Intelligence Information for CVE-2026-74408

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Patches & Fixes for CVE-2026-74408 (8)

Same Patch Batch · Linux · 2026-08-15 · 845 CVEs total

CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-72064 9.8 CRITICAL net: mana: Sync page pool RX frags for CPU
CVE-2026-74436 9.8 CRITICAL rxrpc: serialize kernel accept preallocation with socket teardown
CVE-2026-72065 9.8 CRITICAL net: mana: Validate the packet length reported by the NIC
CVE-2026-72069 9.8 CRITICAL locking/rt: Fix the incorrect RCU protection in rt_spin_unlock()
CVE-2026-74361 9.8 CRITICAL nvme: fix FDP fdpcidx bounds check
CVE-2026-72491 9.8 CRITICAL net/9p: fix race condition on rdma->state in trans_rdma.c
CVE-2026-72248 9.8 CRITICAL netfilter: flowtable: support IPIP tunnel with direct xmit
CVE-2026-74480 9.8 CRITICAL net: bridge: stop fast-leave after deleting a port group
CVE-2026-72494 9.8 CRITICAL RDMA/irdma: Replace waitqueue and flag with completion
CVE-2026-72185 9.8 CRITICAL ntfs: fix WARN_ON for resident attribute in ntfs_map_runlist_nolock()
CVE-2026-72249 9.8 CRITICAL netfilter: flowtable: use dst in this direction when pushing IPIP header
CVE-2026-72251 9.8 CRITICAL netfilter: nf_nat_sip: reload possible stale data pointer

Showing top 20 of 845 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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