CVE-2026-98325: Linux kernel · wifi: mac80211: set up the TX info early to fix failure paths
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 2.0 Low.
Data as of 28 Oct 2026, 01:27 UTC
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 6 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
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.
References
- ubuntu.com/security/CVE-2026-98325 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-98325 (opens in a new tab)
- git.kernel.org/linus/50d3d79dc0743b616afb00d01a626c76758721f7 (opens in a new tab)
- git.kernel.org/stable/c/03d67414bd05b86029afc14535238a9393eac1c6 (opens in a new tab)
- git.kernel.org/stable/c/0fb37d2b6cb829cebdaea80f39011469f474bdcc (opens in a new tab)
- git.kernel.org/stable/c/36e6f0a5e6d7238f4023e77f423c1c1414374309 (opens in a new tab)
- git.kernel.org/stable/c/420fcc2fdeae6ecd682d2b1605a0a54c88aed4aa (opens in a new tab)
- git.kernel.org/stable/c/50d3d79dc0743b616afb00d01a626c76758721f7 (opens in a new tab)
- git.kernel.org/stable/c/df711e9fa20d7e996711c7f43a11a71805bef78d (opens in a new tab)