CVE-2026-23048 - udp: call skb_orphan() before skb_attempt_defer_free()

CVE-2026-23048 - udp: call skb_orphan() before skb_attempt_defer_free()

https://cvefeed.io/rssfeed/latest.atom / Wed, 02/04/2026 - 20:00
CVE ID : CVE-2026-23048
Published : Feb. 4, 2026, 4:16 p.m. | 49 minutes ago
Description : 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.
Severity: 0.0 | NA
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