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CVE-2026-29111
systemd: Local unprivileged user can trigger an assert
Medium5.5EPSS 0.13%
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 98% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
References (11)
- https://github.com/systemd/systemd/security/advisories/GHSA-gx6q-6f99-m764 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/systemd/systemd/commit/1d22f706bd04f45f8422e17fbde3f56ece17758a (opens in a new tab)x_refsource_MISC
- https://github.com/systemd/systemd/commit/20021e7686426052e3a7505425d7e12085feb2a6 (opens in a new tab)x_refsource_MISC
- https://github.com/systemd/systemd/commit/21167006574d6b83813c7596759b474f56562412 (opens in a new tab)x_refsource_MISC
- https://github.com/systemd/systemd/commit/3cee294fe8cf4fa0eff933ab21416d099942cabd (opens in a new tab)x_refsource_MISC
- https://github.com/systemd/systemd/commit/42aee39107fbdd7db1ccd402a2151822b2805e9f (opens in a new tab)x_refsource_MISC
- https://github.com/systemd/systemd/commit/54588d2dedff54bfb6036670820650e4ea74628f (opens in a new tab)x_refsource_MISC
- https://github.com/systemd/systemd/commit/7ac3220213690e8a8d6d2a6e81e43bd1dce01d69 (opens in a new tab)x_refsource_MISC
- https://github.com/systemd/systemd/commit/80acea4ef80a4bb78560ed970c34952299b890d6 (opens in a new tab)x_refsource_MISC
- https://github.com/systemd/systemd/commit/b5fd14693057e5f2c9b4a49603be64ec3608ff6c (opens in a new tab)x_refsource_MISC
- https://github.com/systemd/systemd/commit/efa6ba2ab625aaa160ac435a09e6482fc63bdbe8 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-29111)Record last updated .