CVE-2025-21791

HIGH

Linux Kernel - Use-After-Free in l3mdev_l3_out()

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: vrf: use RCU protection in l3mdev_l3_out() l3mdev_l3_out() can be called without RCU being held: raw_sendmsg() ip_push_pending_frames() ip_send_skb() ip_local_out() __ip_local_out() l3mdev_ip_out() Add rcu_read_lock() / rcu_read_unlock() pair to avoid a potential UAF.

Scores

CVSS v3 7.8
EPSS 0.0023
EPSS Percentile 14.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-416
Status published
Products (27)
linux/Kernel 4.9.0 - 5.4.291linux
linux/Kernel 5.11.0 - 5.15.179linux
linux/Kernel 5.16.0 - 6.1.129linux
linux/Kernel 5.5.0 - 5.10.235linux
linux/Kernel 6.13.0 - 6.13.4linux
linux/Kernel 6.2.0 - 6.6.79linux
linux/Kernel 6.7.0 - 6.12.16linux
Linux/Linux < 4.9
Linux/Linux 4.9
Linux/Linux 5.10.235 - 5.10.*
... and 17 more
Published Feb 27, 2025
Tracked Since Feb 18, 2026