CVE-2026-23444

MediumCVSS 5.5/10Last modified Oct 19, 2026

Description

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-401

Affected software

No affected versions have been published.

Timeline

Published
Apr 3, 2026
Last modified
Oct 19, 2026
NVD status
Modified

Related CVEs from 2026

CVE-2026-234455.5In the Linux kernel, the following vulnerability has been resolved: igc: fix page fault in XDP TX timestamps handling If an XDP applicatioCVE-2026-234465.5In the Linux kernel, the following vulnerability has been resolved: net: usb: aqc111: Do not perform PM inside suspend callback syzbot repCVE-2026-234477.8In the Linux kernel, the following vulnerability has been resolved: net: usb: cdc_ncm: add ndpoffset to NDP32 nframes bounds check The samCVE-2026-234487.8In the Linux kernel, the following vulnerability has been resolved: net: usb: cdc_ncm: add ndpoffset to NDP16 nframes bounds check cdc_ncmCVE-2026-234497.8In the Linux kernel, the following vulnerability has been resolved: net/sched: teql: Fix double-free in teql_master_xmit Whenever a TEQL dCVE-2026-23453.6Proctorio Chrome Extension is a browser extension used for online proctoring. The extension contains multiple window.addEventListener('messaCVE-2026-234509.8In the Linux kernel, the following vulnerability has been resolved: net/smc: fix NULL dereference and UAF in smc_tcp_syn_recv_sock() SyzkaCVE-2026-234517.5In the Linux kernel, the following vulnerability has been resolved: bonding: prevent potential infinite loop in bond_header_parse() bond_hCVE-2026-234524.7In the Linux kernel, the following vulnerability has been resolved: PM: runtime: Fix a race condition related to device removal The followCVE-2026-234537.5In the Linux kernel, the following vulnerability has been resolved: net: ti: icssg-prueth: Fix memory leak in XDP_DROP for non-zero-copy moCVE-2026-234547.0In the Linux kernel, the following vulnerability has been resolved: net: mana: fix use-after-free in mana_hwc_destroy_channel() by reorderiCVE-2026-234559.1In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_h323: check for zero length in DecodeQ931() In
CVE-2026-23444: Medium severity, CVSS 5.5 | Vulnix