What’s Vulnerable › Vulnerabilities

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

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-06 · updated 2026-10-19

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.

Affected products

• Linux kernel: from 3.6.3 before 3.7; 3.7 — fixed in 3.7, 7.3

How to fix

Upgrade to a fixed version: Linux kernel 3.7, 7.3. Check the vendor advisory for mitigations.

References

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

Get alerted when CVE-2026-98325 or the next vulnerability affects your stack