CVE-2026-23048

high

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.

References

https://git.kernel.org/stable/c/e5c8eda39a9fc1547d1398d707aa06c1d080abdd

https://git.kernel.org/stable/c/0c63d5683eae6a7b4d81382bcbecb2a19feff90d

Details

Source: Mitre, NVD

Published: 2026-02-04

Updated: 2026-02-04

Risk Information

CVSS v2

Base Score: 5.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Severity: High

EPSS

EPSS: 0.00018