CVE-2025-21760

HIGH

Linux Kernel Use-After-Free in ndisc_send_skb()

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: ndisc: extend RCU protection in ndisc_send_skb() ndisc_send_skb() can be called without RTNL or RCU held. Acquire rcu_read_lock() earlier, so that we can use dev_net_rcu() and avoid a potential UAF.

References (11)

Core 11
Core References

Scores

CVSS v3 7.8
EPSS 0.0891
EPSS Percentile 94.6%
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 2.6.26 - 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 < 2.6.26
Linux/Linux 1762f7e88eb34f653b4a915be99a102e347dd45e - 04e05112f10354ffc3bb6cc796d553bab161594c
Linux/Linux 1762f7e88eb34f653b4a915be99a102e347dd45e - 10a1f3fece2f0d23a3a618b72b2b4e6f408ef7d1
... and 17 more
Published Feb 27, 2025
Tracked Since Feb 18, 2026