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CVE-2026-74323— wifi: mt76: mt7996: Fix possible token leak in mt7996_tx_prepare_skb()

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mt7996_tx_prepare_skb例程中link_conf或link_sta查找失败时未释放已分配的tx令牌，可能导致令牌泄漏。

CVSS 8.8 · High EPSS 0.38% · P30

Possible ATT&CK Techniques 1 AI

T1562.001

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 7ef0c7ad735b0c38140259519a3f165bee2b857c< 06e65d6cf80490bc0457d339595d1ed5a89e8899 affected
7ef0c7ad735b0c38140259519a3f165bee2b857c< fa0e9aa92a7bc97fc42014c5efaaf1278fa92723 affected
7ef0c7ad735b0c38140259519a3f165bee2b857c< 831074096d0450308357271fc0ffd3f600a2487e affected
6.18 affected
< 6.18 unaffected
6.18.40≤ 6.18.* unaffected
7.1.5≤ 7.1.* unaffected
7.2≤ * unaffected
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I. Basic Information for CVE-2026-74323

Vulnerability Information
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Vulnerability Title
wifi: mt76: mt7996: Fix possible token leak in mt7996_tx_prepare_skb()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: Fix possible token leak in mt7996_tx_prepare_skb() If link_conf or link_sta lookup fails in mt7996_tx_prepare_skb routine, mt7996 driver leaks an already allocated tx token. Fix the issue releasing the token in case of error.
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mt7996_tx_prepare_skb例程中link_conf或link_sta查找失败时未释放已分配的tx令牌，可能导致令牌泄漏。
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 7ef0c7ad735b0c38140259519a3f165bee2b857c ~ 06e65d6cf80490bc0457d339595d1ed5a89e8899 -
Linux Linux 6.18 -

II. Public POCs for CVE-2026-74323

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III. Intelligence Information for CVE-2026-74323

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Patches & Fixes for CVE-2026-74323 (3)

Same Patch Batch · Linux · 2026-08-15 · 844 CVEs total

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-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-72251 9.8 CRITICAL netfilter: nf_nat_sip: reload possible stale data pointer
CVE-2026-72191 9.8 CRITICAL ntfs3: validate split-point offset in indx_insert_into_buffer
CVE-2026-74315 9.8 CRITICAL lockd: Avoid hashing uninitialized bytes in nlm4svc_lookup_file()
CVE-2026-72084 9.8 CRITICAL scsi: target: Bound PR-OUT TransportID parsing to the received buffer
CVE-2026-72083 9.8 CRITICAL scsi: target: core: Fix iSCSI ISID use-after-free in REGISTER AND MOVE
CVE-2026-74401 9.8 CRITICAL dlm: fix add msg handle in send_queue ordered
CVE-2026-72248 9.8 CRITICAL netfilter: flowtable: support IPIP tunnel with direct xmit
CVE-2026-74493 9.8 CRITICAL net/smc: fix socket use-after-free during link group termination
CVE-2026-74350 9.8 CRITICAL ocfs2: validate fast symlink target during inode read
CVE-2026-72249 9.8 CRITICAL netfilter: flowtable: use dst in this direction when pushing IPIP header
CVE-2026-74345 9.8 CRITICAL RDMA/siw: Fix endpoint/socket association handling
CVE-2026-74495 9.8 CRITICAL igbvf: Fix leak in TX DMA error cleanup

Showing top 20 of 844 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-74323

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