CVE-2026-29111
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.
Does this matter?
Lower severity and a low EPSS score (0.12%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.12% probability · 2th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-269
- Affected
- systemd project/systemd
- Source
- security-advisories@github.com
References
- https://github.com/systemd/systemd/commit/1d22f706bd04f45f8422e17fbde3f56ece17758aPatch
- https://github.com/systemd/systemd/commit/20021e7686426052e3a7505425d7e12085feb2a6Patch
- https://github.com/systemd/systemd/commit/21167006574d6b83813c7596759b474f56562412Patch
- https://github.com/systemd/systemd/commit/3cee294fe8cf4fa0eff933ab21416d099942cabdPatch
- https://github.com/systemd/systemd/commit/42aee39107fbdd7db1ccd402a2151822b2805e9fPatch
- https://github.com/systemd/systemd/commit/54588d2dedff54bfb6036670820650e4ea74628fPatch
- https://github.com/systemd/systemd/commit/7ac3220213690e8a8d6d2a6e81e43bd1dce01d69Patch
- https://github.com/systemd/systemd/commit/80acea4ef80a4bb78560ed970c34952299b890d6Patch
- https://github.com/systemd/systemd/commit/b5fd14693057e5f2c9b4a49603be64ec3608ff6cPatch
- https://github.com/systemd/systemd/commit/efa6ba2ab625aaa160ac435a09e6482fc63bdbe8Patch
- https://github.com/systemd/systemd/security/advisories/GHSA-gx6q-6f99-m764Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.