What’s Vulnerable › Vulnerabilities

CVE-2026-92497: wifi: ath12k: Avoid buffer overread in ath12k_wmi_op_rx()

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: Avoid buffer overread in ath12k_wmi_op_rx() Currently, in ath12k_wmi_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. Update the logic to verify the buffer contains at least enough data to hold a wmi_cmd_hdr before reading from the buffer. Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c7-00108-QCAHMTSWPL_V1.0_V2.0_SILICONZ_UPSTREAM-3

Affected products

• Linux kernel: 6.3 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/07659388110de004cbb753f3c7bc85e657e51f7a
• https://git.kernel.org/stable/c/7698656a2f7b045af5a6859766238cefea1b1945
• https://git.kernel.org/stable/c/95d1bd1db9e9d8eccffc880166e01c4775115716
• https://git.kernel.org/stable/c/9784faa6afd26693287e8e4569bdedee00212909
• https://git.kernel.org/stable/c/9e6ec0977f0b9c16fc20efea050e3eea8f66e34b

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