CVE-2026-92496
wifi: ath11k: Avoid buffer overread in ath11k_wmi_tlv_op_rx()
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.
INFO
Published Date :
Sept. 17, 2026, 5:17 p.m.
Last Modified :
Sept. 17, 2026, 5:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the Linux kernel.
- Apply the ath11k driver patch.
- Verify buffer lengths before data access.
- Recompile and test the kernel.
References to Advisories, Solutions, and Tools
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CVE-2026-92496.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-92496 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
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stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-92496
weaknesses.
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Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 17, 2026
Action Type Old Value New Value Added 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. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/92xxx/CVE-2026-92496.json">CVE-2026-92496</a> Added Reference https://git.kernel.org/stable/c/20166fd9a4ad15d7eccc63c9dc99680aea6558ef Added Reference https://git.kernel.org/stable/c/2677fc48dd10dc08cdec99c2692d50fe5f48dcbf Added Reference https://git.kernel.org/stable/c/71690d26c1415e816158b45ee354367244c50d4c Added Reference https://git.kernel.org/stable/c/72a5e45f606ec454ef556a68ffd92e06b0677f44 Added Reference https://git.kernel.org/stable/c/9652e7e23137538169f60323300cae3413475685 Added Reference https://git.kernel.org/stable/c/9ddbc95dac167e3f2d0e3859e6ce022ae0184fc1 Added Reference https://git.kernel.org/stable/c/9ef9dd30058cc9223c72f711dca1a28a5947d0c5 Added Reference https://git.kernel.org/stable/c/f9726f6d97dca94ab14739c8b632301a940a7e8f