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CVE-2026-92496— wifi: ath11k: Avoid buffer overread in ath11k_wmi_tlv_op_rx()

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.

在 Linux 内核中，以下漏洞已得到解决： wifi: ath11k：避免 ath11k_wmi_tlv_op_rx() 中的缓冲区过度读取（buffer overread） 目前，在 函数中，固件缓冲区在读取之前未先验证缓冲区是否包含足够的数据以容纳一个头部（header）。这可能导致缓冲区过度读取。 修复方法： 在将 解引用为 之前，增加一个前置长度检查。该检查位于 调用之前，以保持现有的追踪语义（即追踪包含头部的完整原始 WMI 事件），这与类似的 ath12k 修复不同——后者可以直接使用 。 状态： 仅

AI Predicted 5.6 Difficulty: Moderate EPSS 0.21% · P10

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux d5c65159f2895379e11ca13f62feabe93278985d< 20166fd9a4ad15d7eccc63c9dc99680aea6558ef affected
d5c65159f2895379e11ca13f62feabe93278985d< 71690d26c1415e816158b45ee354367244c50d4c affected
d5c65159f2895379e11ca13f62feabe93278985d< f9726f6d97dca94ab14739c8b632301a940a7e8f affected
d5c65159f2895379e11ca13f62feabe93278985d< 2677fc48dd10dc08cdec99c2692d50fe5f48dcbf affected
d5c65159f2895379e11ca13f62feabe93278985d< 9652e7e23137538169f60323300cae3413475685 affected
d5c65159f2895379e11ca13f62feabe93278985d< 72a5e45f606ec454ef556a68ffd92e06b0677f44 affected
d5c65159f2895379e11ca13f62feabe93278985d< 9ddbc95dac167e3f2d0e3859e6ce022ae0184fc1 affected
d5c65159f2895379e11ca13f62feabe93278985d< 9ef9dd30058cc9223c72f711dca1a28a5947d0c5 affected
… +10 more rows
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I. Basic Information for CVE-2026-92496

Vulnerability Information
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Vulnerability Title
wifi: ath11k: Avoid buffer overread in ath11k_wmi_tlv_op_rx()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: Avoid buffer overread in ath11k_wmi_tlv_op_rx() Currently, in ath11k_wmi_tlv_op_rx(), the firmware buffer is read without first verifying that the buffer has enough data to hold a header. This could result in a buffer overread. Add an upfront length check before dereferencing skb->data as a wmi_cmd_hdr. The check is placed before the trace_ath11k_wmi_event() call to preserve the existing trace semantics (tracing the full raw WMI event including the header), unlike the analogous ath12k fix which could use skb_pull_data() directly. Compile tested only.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux d5c65159f2895379e11ca13f62feabe93278985d ~ 20166fd9a4ad15d7eccc63c9dc99680aea6558ef -
Linux Linux 5.6 -

II. Public POCs for CVE-2026-92496

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III. Intelligence Information for CVE-2026-92496

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Patches & Fixes for CVE-2026-92496 (8)

Same Patch Batch · Linux · 2026-09-17 · 600 CVEs total

CVE-2026-92489 9.8 CRITICAL xfrm: Fix skb double-free in xfrm_dev_direct_output()
CVE-2026-90235 9.8 CRITICAL sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
CVE-2026-90173 9.8 CRITICAL smb: smbdirect: free completion queues with ib_free_cq()
CVE-2026-90104 9.8 CRITICAL NFSv4.1: zero referring call lists before decoding
CVE-2026-90151 9.8 CRITICAL NFSv4: remove callback IDR entry on client allocation failure
CVE-2026-90110 9.4 CRITICAL inetpeer: randomize RB-tree node comparison using SipHash
CVE-2026-90230 9.1 CRITICAL nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()
CVE-2026-90414 9.1 CRITICAL IB/isert: reject PDUs declaring more data than was received
CVE-2026-90413 9.1 CRITICAL IB/isert: reject login PDUs declaring more data than was received
CVE-2026-90367 8.8 HIGH wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER
CVE-2026-90329 8.8 HIGH HID: synchronize input before cleaning up a failed probe
CVE-2026-93189 8.8 HIGH HID: core: quiesce input in hid_hw_stop() to prevent use-after-free
CVE-2026-90240 8.8 HIGH iommu/vt-d: Flush context cache with correct SID when tearing down aliases
CVE-2026-90357 8.8 HIGH wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement
CVE-2026-90286 8.8 HIGH drm/amdgpu/gfx6: Use PFP on the compute queues too
CVE-2026-93042 8.8 HIGH dmaengine: dw-edma: Terminate all descriptors without callbacks
CVE-2026-90256 8.8 HIGH Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90380 8.8 HIGH wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete
CVE-2026-90381 8.8 HIGH wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx()
CVE-2026-90425 8.8 HIGH iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID

Showing top 20 of 600 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-92496

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