# wifi: ath12k: fix overreads in ath12k_wmi_process_csa_switch_count_event()

CVE record · `CVE-2026-90408`

- **Identifiers:** `CVE-2026-90408`
- **State:** Confirmed
- **Severity:** CVSS 7.7 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 17 Sept 2026
- **Updated:** 21 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:09 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before d4aec20f3a84634171c139ab2e02bb2e5a5c756b` (git)
  - affected: `d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before 24f7cdabea9f7ab95dbd6d8bc9ac6ec48d96a7e5` (git)
  - affected: `d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before 23bed4ef132c55c9016f0c6122c8b8ba2efa2353` (git)
  - affected: `d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before bf97c9d5123859a07848462539153176db029f3a` (git)
  - affected: `d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before 878654eb78c6aa0ff585baf1376567c775ca28ec` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.3`
  - unaffected: `before 6.3` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.114 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.57 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.6 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 7.7 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0019, the 8th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 17 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-90408](https://www.cve.org/CVERecord?id=CVE-2026-90408)
- [NVD: CVE-2026-90408](https://nvd.nist.gov/vuln/detail/CVE-2026-90408)

### References from the CNA

- <https://git.kernel.org/stable/c/d4aec20f3a84634171c139ab2e02bb2e5a5c756b>
- <https://git.kernel.org/stable/c/24f7cdabea9f7ab95dbd6d8bc9ac6ec48d96a7e5>
- <https://git.kernel.org/stable/c/23bed4ef132c55c9016f0c6122c8b8ba2efa2353>
- <https://git.kernel.org/stable/c/bf97c9d5123859a07848462539153176db029f3a>
- <https://git.kernel.org/stable/c/878654eb78c6aa0ff585baf1376567c775ca28ec>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-90408>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90408/>. Everything for agents: <https://agentprime.io/llms.txt>.