CVE-2026-92496

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxd5c65159f2895379e11ca13f62feabe93278985d < 20166fd9a4ad15d7eccc63c9dc99680aea6558efaffected
LinuxLinuxd5c65159f2895379e11ca13f62feabe93278985d < 71690d26c1415e816158b45ee354367244c50d4caffected
LinuxLinuxd5c65159f2895379e11ca13f62feabe93278985d < f9726f6d97dca94ab14739c8b632301a940a7e8faffected
LinuxLinuxd5c65159f2895379e11ca13f62feabe93278985d < 2677fc48dd10dc08cdec99c2692d50fe5f48dcbfaffected
LinuxLinuxd5c65159f2895379e11ca13f62feabe93278985d < 9652e7e23137538169f60323300cae3413475685affected
LinuxLinuxd5c65159f2895379e11ca13f62feabe93278985d < 72a5e45f606ec454ef556a68ffd92e06b0677f44affected
LinuxLinuxd5c65159f2895379e11ca13f62feabe93278985d < 9ddbc95dac167e3f2d0e3859e6ce022ae0184fc1affected
LinuxLinuxd5c65159f2895379e11ca13f62feabe93278985d < 9ef9dd30058cc9223c72f711dca1a28a5947d0c5affected
LinuxLinux5.6affected
LinuxLinux0 < 5.6unaffected
LinuxLinux5.10.270 <= 5.10.*unaffected
LinuxLinux5.15.221 <= 5.15.*unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References