CVE-2025-21659 — Improper Privilege Management in Linux
Severity
5.5MEDIUMNVD
OSV7.8OSV7.1OSV6.2
EPSS
0.0%
top 95.82%
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:
netdev: prevent accessing NAPI instances from another namespace
The NAPI IDs were not fully exposed to user space prior to the netlink
API, so they were never namespaced. The netlink API must ensure that
at the very least NAPI instance belongs to the same netns as the owner
of the genl sock.
napi_by_id() can become static now, but it needs to move because of
dev_get_by_napi_id().
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 Packages5 packages
▶CVEListV5linux/linux27f91aaf49b3a50e5a02ad5fa27b7c453d029a72 — b683ba0df11ff563cc237eb1b74d6adfa77226bf+2