Description
systemd, a system and service manager, (as PID 1) hits an assert and freezes execution when an unprivileged IPC API call is made with spurious data. On version v249 and older the effect is not an assert, but stack overwriting, with the attacker controlled content. From version v250 and newer this is not possible as the safety check causes an assert instead. This IPC call was added in v239, so versions older than that are not affected. Versions 260-rc1, 259.2, 258.5, and 257.11 contain patches. No known workarounds are available.
References (11)
Scores
CVSS v3
5.5
EPSS
0.0002
EPSS Percentile
5.5%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-269
Status
published
Products (4)
systemd/systemd
>= 239, < 257.11
systemd/systemd
>= 258, < 258.5
systemd/systemd
>= 259, < 259.2
systemd_project/systemd
239 - 257.11
Published
Mar 23, 2026
Tracked Since
Mar 24, 2026