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.
Schwachstellenklasse
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.
Betroffene Produkte
- linux linux_kernel
Quellen
- https://git.kernel.org/stable/c/06e769dddcbeb3baf2ce346273b53dd61fdbecf4
- https://git.kernel.org/stable/c/3b4d27acafaeab478fd24f79ad6e593a892828b9
- https://git.kernel.org/stable/c/50f1b690b4868923fbd242298def2fb88662f108
- https://git.kernel.org/stable/c/5ef8ca1c164786da24169af155c1ca1ff1353cf8
- https://git.kernel.org/stable/c/905ef207d5ed99ca64adfe39fba9ac46e434327a
- https://git.kernel.org/stable/c/9a779d1f480e83720b5384adf165604e7ee226bd
Finden Sie die Schwachstelle, bevor es ein Angreifer tut.
Melden Sie sich mit GitHub an und starten Sie Ihr erstes Audit in weniger als einer Minute. Für den kostenlosen Plan ist keine Kreditkarte nötig.