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CVE-2026-29111

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CVE-2026-29111

Published: Mar 23, 2026

Modified: Mar 25, 2026

PUBLISHED

CVSS v3.1

5.5

MEDIUM

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.

VendorProductVersions

systemd

systemd

affected
>= 239, < 257.11
affected
>= 258, < 258.5
affected
>= 259, < 259.2

Weaknesses (CWE)

CWE-269

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

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