Vulnerability · Published Mar 23, 2026 · Assigned by GitHub_M
CVE-2026-29111systemd: Local unprivileged user can trigger an assert
Medium 5.5
In plain English
A medium-severity privilege mismanagement in systemd from systemd. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.1%top 97.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:9 | rhel-net-naming-sysattrs | 252-55.el9_7.9.alma.1 | ALSA-2026:13677 |
| AlmaLinux:9 | rhel-net-naming-sysattrs | 252-67.el9_8.2.alma.1 | ALSA-2026:19213 |
| AlmaLinux:10 | systemd | 257-23.el10_2.1.alma.1 | ALSA-2026:19068 |
| AlmaLinux:9 | systemd | 252-55.el9_7.9.alma.1 | ALSA-2026:13677 |
| AlmaLinux:9 | systemd | 252-67.el9_8.2.alma.1 | ALSA-2026:19213 |
| AlmaLinux:10 | systemd-boot-unsigned | 257-23.el10_2.1.alma.1 | ALSA-2026:19068 |
| AlmaLinux:9 | systemd-boot-unsigned | 252-67.el9_8.2.alma.1 | ALSA-2026:19213 |
| AlmaLinux:9 | systemd-boot-unsigned | 252-55.el9_7.9.alma.1 | ALSA-2026:13677 |
| AlmaLinux:10 | systemd-container | 257-23.el10_2.1.alma.1 | ALSA-2026:19068 |
| AlmaLinux:9 | systemd-container | 252-67.el9_8.2.alma.1 | ALSA-2026:19213 |
| AlmaLinux:9 | systemd-container | 252-55.el9_7.9.alma.1 | ALSA-2026:13677 |
| AlmaLinux:10 | systemd-devel | 257-23.el10_2.1.alma.1 | ALSA-2026:19068 |
| AlmaLinux:9 | systemd-devel | 252-67.el9_8.2.alma.1 | ALSA-2026:19213 |
| AlmaLinux:9 | systemd-devel | 252-55.el9_7.9.alma.1 | ALSA-2026:13677 |
| AlmaLinux:10 | systemd-journal-remote | 257-23.el10_2.1.alma.1 | ALSA-2026:19068 |
| AlmaLinux:9 | systemd-journal-remote | 252-67.el9_8.2.alma.1 | ALSA-2026:19213 |
| AlmaLinux:9 | systemd-journal-remote | 252-55.el9_7.9.alma.1 | ALSA-2026:13677 |
| AlmaLinux:10 | systemd-libs | 257-23.el10_2.1.alma.1 | ALSA-2026:19068 |
| AlmaLinux:9 | systemd-libs | 252-55.el9_7.9.alma.1 | ALSA-2026:13677 |
| AlmaLinux:9 | systemd-libs | 252-67.el9_8.2.alma.1 | ALSA-2026:19213 |
| AlmaLinux:10 | systemd-oomd | 257-23.el10_2.1.alma.1 | ALSA-2026:19068 |
| AlmaLinux:9 | systemd-oomd | 252-55.el9_7.9.alma.1 | ALSA-2026:13677 |
| AlmaLinux:9 | systemd-oomd | 252-67.el9_8.2.alma.1 | ALSA-2026:19213 |
| AlmaLinux:10 | systemd-pam | 257-23.el10_2.1.alma.1 | ALSA-2026:19068 |
| AlmaLinux:9 | systemd-pam | 252-55.el9_7.9.alma.1 | ALSA-2026:13677 |
| AlmaLinux:9 | systemd-pam | 252-67.el9_8.2.alma.1 | ALSA-2026:19213 |
| AlmaLinux:10 | systemd-resolved | 257-23.el10_2.1.alma.1 | ALSA-2026:19068 |
| AlmaLinux:9 | systemd-resolved | 252-67.el9_8.2.alma.1 | ALSA-2026:19213 |
| AlmaLinux:9 | systemd-resolved | 252-55.el9_7.9.alma.1 | ALSA-2026:13677 |
| AlmaLinux:10 | systemd-rpm-macros | 257-13.el10_1.3.alma.1 | ALSA-2026:13651 |
| AlmaLinux:10 | systemd-rpm-macros | 257-23.el10_2.1.alma.1 | ALSA-2026:19068 |
| AlmaLinux:9 | systemd-rpm-macros | 252-67.el9_8.2.alma.1 | ALSA-2026:19213 |
| AlmaLinux:9 | systemd-rpm-macros | 252-55.el9_7.9.alma.1 | ALSA-2026:13677 |
| AlmaLinux:10 | systemd-udev | 257-23.el10_2.1.alma.1 | ALSA-2026:19068 |
| AlmaLinux:9 | systemd-udev | 252-67.el9_8.2.alma.1 | ALSA-2026:19213 |
| AlmaLinux:9 | systemd-udev | 252-55.el9_7.9.alma.1 | ALSA-2026:13677 |
| AlmaLinux:10 | systemd-ukify | 257-23.el10_2.1.alma.1 | ALSA-2026:19068 |
| AlmaLinux:10 | systemd-ukify | 257-13.el10_1.3.alma.1 | ALSA-2026:13651 |
| AlmaLinux:9 | systemd-ukify | 252-55.el9_7.9.alma.1 | ALSA-2026:13677 |
| AlmaLinux:9 | systemd-ukify | 252-67.el9_8.2.alma.1 | ALSA-2026:19213 |
| Debian:12 | systemd | 252.39-1~deb12u2 | DEBIAN-CVE-2026-29111 |
| Debian:13 | systemd | 257.13-1~deb13u1 | DEBIAN-CVE-2026-29111 |
| Debian:14 | systemd | 260~rc2-1 | DEBIAN-CVE-2026-29111 |
| Rocky Linux:10 | systemd | 0:257-23.el10_2.1.rocky.0.1 | RLSA-2026:19068 |
| Rocky Linux:10 | systemd | 0:257-13.el10_1.3.rocky.0.1 | RLSA-2026:13651 |
| Rocky Linux:9 | systemd | 0:252-55.el9_7.9.rocky.0.1 | RLSA-2026:13677 |
| Rocky Linux:9 | systemd | 0:252-67.el9_8.2.rocky.0.1 | RLSA-2026:19213 |
| Ubuntu:22.04:LTS | systemd | 249.11-0ubuntu3.19 | UBUNTU-CVE-2026-29111 |
| Ubuntu:22.04:LTS | systemd | 249.11-0ubuntu3.19 | USN-8119-1 |
| Ubuntu:24.04:LTS | systemd | 255.4-1ubuntu8.14 | USN-8119-1 |
| Ubuntu:24.04:LTS | systemd | 255.4-1ubuntu8.14 | UBUNTU-CVE-2026-29111 |
| Ubuntu:25.10 | systemd | 257.9-0ubuntu2.3 | UBUNTU-CVE-2026-29111 |
| Ubuntu:25.10 | systemd | 257.9-0ubuntu2.3 | USN-8119-1 |
Affected products (as reported)
Weakness: CWE-269 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/systemd/systemd/security/advisories/GHSA-gx6q-6f99-m764 x_refsource_CONFIRM
- https://github.com/systemd/systemd/commit/1d22f706bd04f45f8422e17fbde3f56ece17758a x_refsource_MISC
- https://github.com/systemd/systemd/commit/20021e7686426052e3a7505425d7e12085feb2a6 x_refsource_MISC
- https://github.com/systemd/systemd/commit/21167006574d6b83813c7596759b474f56562412 x_refsource_MISC
- https://github.com/systemd/systemd/commit/3cee294fe8cf4fa0eff933ab21416d099942cabd x_refsource_MISC
- https://github.com/systemd/systemd/commit/42aee39107fbdd7db1ccd402a2151822b2805e9f x_refsource_MISC
- https://github.com/systemd/systemd/commit/54588d2dedff54bfb6036670820650e4ea74628f x_refsource_MISC
- https://github.com/systemd/systemd/commit/7ac3220213690e8a8d6d2a6e81e43bd1dce01d69 x_refsource_MISC
- https://github.com/systemd/systemd/commit/80acea4ef80a4bb78560ed970c34952299b890d6 x_refsource_MISC
- https://github.com/systemd/systemd/commit/b5fd14693057e5f2c9b4a49603be64ec3608ff6c x_refsource_MISC
- https://github.com/systemd/systemd/commit/efa6ba2ab625aaa160ac435a09e6482fc63bdbe8 x_refsource_MISC