CVE-2026-23444
Description
AI Translation Available
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.
https://git.kernel.org/stable/c/06e769dddcbeb3baf2ce346273b53dd61fdbecf4
https://git.kernel.org/stable/c/50f1b690b4868923fbd242298def2fb88662f108
https://git.kernel.org/stable/c/d5ad6ab61cbd89afdb60881f6274f74328af3ee9