systemd: Local unprivileged user can trigger an assert
Summary
| CVE | CVE-2026-29111 |
|---|---|
| State | PUBLISHED |
| Assigner | GitHub_M |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-03-23 22:16:26 UTC |
| Updated | 2026-04-15 16:44:38 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 5.5 MEDIUM from [email protected]
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Problem Types: CWE-269 | NVD-CWE-noinfo | CWE-269 CWE-269: Improper Privilege Management
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 5.5 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | CNA | DECLARED | 5.5 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Systemd Project | Systemd | All | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/systemd/systemd/commit/7ac3220213690e8a8d6d2a6e81e43bd1dce01d69 | [email protected] | github.com | Patch |
| github.com/systemd/systemd/commit/42aee39107fbdd7db1ccd402a2151822b2805e9f | [email protected] | github.com | Patch |
| github.com/systemd/systemd/commit/54588d2dedff54bfb6036670820650e4ea74628f | [email protected] | github.com | Patch |
| github.com/systemd/systemd/commit/20021e7686426052e3a7505425d7e12085feb2a6 | [email protected] | github.com | Patch |
| github.com/systemd/systemd/commit/1d22f706bd04f45f8422e17fbde3f56ece17758a | [email protected] | github.com | Patch |
| github.com/systemd/systemd/commit/21167006574d6b83813c7596759b474f56562412 | [email protected] | github.com | Patch |
| github.com/systemd/systemd/commit/efa6ba2ab625aaa160ac435a09e6482fc63bdbe8 | [email protected] | github.com | Patch |
| github.com/systemd/systemd/commit/b5fd14693057e5f2c9b4a49603be64ec3608ff6c | [email protected] | github.com | Patch |
| github.com/systemd/systemd/security/advisories/GHSA-gx6q-6f99-m764 | [email protected] | github.com | Patch, Vendor Advisory |
| github.com/systemd/systemd/commit/3cee294fe8cf4fa0eff933ab21416d099942cabd | [email protected] | github.com | Patch |
| github.com/systemd/systemd/commit/80acea4ef80a4bb78560ed970c34952299b890d6 | [email protected] | github.com | Patch |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.