CVE-2025-21646 — Improper Input Validation in Linux
Severity
5.5MEDIUMNVD
OSV7.8OSV7.1OSV6.2
EPSS
0.0%
top 92.55%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJan 19
Latest updateMay 29
Description
In the Linux kernel, the following vulnerability has been resolved:
afs: Fix the maximum cell name length
The kafs filesystem limits the maximum length of a cell to 256 bytes, but a
problem occurs if someone actually does that: kafs tries to create a
directory under /proc/net/afs/ with the name of the cell, but that fails
with a warning:
WARNING: CPU: 0 PID: 9 at fs/proc/generic.c:405
because procfs limits the maximum filename length to 255.
However, the DNS limits the maximum lookup length…
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 Packages14 packages
▶CVEListV5linux/linuxc3e9f888263bb4df11cbd623ceced02081cb2f9f — 9340385468d056bb700b8f28df236b81fc86a079+6