linux: In the Linux kernel, the following vulnerability has been resolved: udp: call skb_orphan() before skb_attempt_defer_...
CVE-2026-23048 is fixed in linux on 1 platform by DEBIAN-CVE-2026-23048 (version 6.18.8-1), released February 4, 2026. It is not reported as exploited. Patch Radar priority: Routine.
In the Linux kernel, the following vulnerability has been resolved: udp: call skb_orphan() before skb_attempt_defer_free() Standard UDP receive path does not use skb->destructor. But skmsg layer does use it, since it calls skb_set_owner_sk_safe() from udp_read_skb(). This then triggers this warning in skb_attempt_defer_free(): DEBUG_NET_WARN_ON_ONCE(skb->destructor); We must call skb_orphan() to fix this issue.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 14 | 6.18.8-1 | DEBIAN-CVE-2026-23048 | Feb 4, 2026 |
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