CVE-2025-21664 — Improper Input Validation in Linux
Severity
5.5MEDIUMNVD
OSV7.8OSV7.1OSV6.2
EPSS
0.0%
top 91.97%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJan 21
Latest updateMay 29
Description
In the Linux kernel, the following vulnerability has been resolved:
dm thin: make get_first_thin use rcu-safe list first function
The documentation in rculist.h explains the absence of list_empty_rcu()
and cautions programmers against relying on a list_empty() ->
list_first() sequence in RCU safe code. This is because each of these
functions performs its own READ_ONCE() of the list head. This can lead
to a situation where the list_empty() sees a valid list entry, but the
subsequent list_first(…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6
Affected Packages6 packages
▶CVEListV5linux/linuxb10ebd34cccae1b431caf1be54919aede2be7cbe — ec037fe8c0d0f6140e3d8a49c7b29cb5582160b8+7