CVE-2026-23444

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: always free skb on ieee80211_tx_prepare_skb() failure ieee80211_tx_prepare_skb() has three error paths, but only two of them free the skb. The first error path (ieee80211_tx_prepare() returning TX_DROP) does not free it, while invoke_tx_handlers() failure and the fragmentation check both do. Add kfree_skb() to the first error path so all three are consistent, and remove the now-redundant frees in callers (ath9k, mt76, mac80211_hwsim) to avoid double-free. Document the skb ownership guarantee in the function's kdoc.

The following products are affected by CVE-2026-23444 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-23444.

URL	Resource
https://git.kernel.org/stable/c/06e769dddcbeb3baf2ce346273b53dd61fdbecf4
https://git.kernel.org/stable/c/50f1b690b4868923fbd242298def2fb88662f108
https://git.kernel.org/stable/c/d5ad6ab61cbd89afdb60881f6274f74328af3ee9
https://lore.kernel.org/linux-cve-announce/2026040314-CVE-2026-23444-8169@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2026-23444
https://www.cve.org/CVERecord?id=CVE-2026-23444