CVE-2026-29111
Last modified
CVE-2026-29111 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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. EPSS estimates a 0.12% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Systemd Project | Systemd | >= 239, < 257.11 |
| Systemd Project | Systemd | >= 258, < 258.5 |
| Systemd Project | Systemd | >= 259, < 259.2 |
References
- https://github.com/systemd/systemd/security/advisories/GHSA-gx6q-6f99-m764Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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