CVE-2026-29111systemd, 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.
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No exploitation reported and no EPSS estimate yet.
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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
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-269
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
systemd_project systemd systemd_project:systemd | from 239 before 257.11; from 258 before 258.5; from 259 before 259.2 | NVD |
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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.