CVE-2026-92497 wifi: ath12k: Avoid buffer overread in ath12k_wmi_op_rx()
A buffer overread in the ath12k WiFi driver allows attackers to cause denial of service or leak kernel memory via crafted wireless frames.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-92497?
CVE-2026-92497 is a memory corruption vulnerability in Linux, published on 17 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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
Which versions are affected by CVE-2026-92497?
How do I fix CVE-2026-92497?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-92497 being exploited?
There is no known exploitation of CVE-2026-92497 in the wild and no public exploit code.
Sources
Also known as AZL-102476, BELL-CVE-2026-92497, DEBIAN-CVE-2026-92497, GHSA-xq7v-gfw6-fj88, UBUNTU-CVE-2026-92497.