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CVE-2026-29111

CVE-2026-29111 · systemd: Local unprivileged user can trigger an assert

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 · EPSS 0.2% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • systemd

    Versions
    • >= 239, < 257.11: Affected
    • >= 258, < 258.5: Affected
    • >= 259, < 259.2: Affected

    No fix published

  • systemd Debian:12

    Versions
    • 252.11-1
    • 252.11-1~deb12u1
    • 252.12-1~deb12u1
    • 252.14-1~deb12u1
    • 252.16-1~deb12u1
    • 252.17-1~deb12u1
    • 252.18-1~deb12u1
    • 252.19-1~deb12u1
    • 252.20-1~deb12u1
    • 252.21-1~deb12u1
    • 252.22-1~deb12u1
    • 252.23-1~deb12u1
    • 252.24-1~deb12u1
    • 252.25-1~deb12u1
    • 252.26-1~deb12u1
    • 252.26-1~deb12u2
    • 252.26-1~deb12u2~bpo11+1
    • 252.27-1~deb12u1
    • 252.28-1~deb12u1
    • 252.29-1~deb12u1
    • 252.29-1~deb12u1~bpo11+1
    • 252.30-1~deb12u1
    • 252.30-1~deb12u2
    • 252.31-1~deb12u1
    • 252.32-1~deb12u1
    • 252.33-1~deb12u1
    • 252.36-1~deb12u1
    • 252.38-1~deb12u1
    • 252.39-1~deb12u1
    • 252.6-1
    • 252.6-1+loong64
    Affected ranges
    • ECOSYSTEM: < 252.39-1~deb12u2

    Update to 252.39-1~deb12u2

  • systemd Debian:13

    Versions
    • 257.7-1
    • 257.8-1~deb13u1
    • 257.8-1~deb13u2
    • 257.9-1~deb13u1
    Affected ranges
    • ECOSYSTEM: < 257.13-1~deb13u1

    Update to 257.13-1~deb13u1

  • systemd Debian:14

    Versions
    • 257.13-1~deb13u1
    • 257.7-1
    • 257.8-1~deb13u1
    • 257.8-1~deb13u2
    • 257.9-1~deb13u1
    • 258-1
    • 258.1-1
    • 258.1-2
    • 258~rc1-1
    • 258~rc2-1
    • 258~rc2-2
    • 258~rc3-1
    • 258~rc4-1
    • 259-1
    • 259.1-1
    • 259~rc1-1
    • 259~rc2-1
    • 259~rc3-1
    • 260~rc1-1
    • 260~rc1-2
    Affected ranges
    • ECOSYSTEM: < 260~rc2-1

    Update to 260~rc2-1

  • systemd Ubuntu:Pro:20.04:LTS

    Versions
    • 242-7ubuntu3
    • 243-2ubuntu1
    • 243-3ubuntu1
    • 244-3ubuntu1
    • 244.1-0ubuntu2
    • 244.1-0ubuntu3
    • 244.2-1ubuntu1
    • 244.3-1ubuntu1
    • 245.2-1ubuntu1
    • 245.2-1ubuntu2
    • 245.4-2ubuntu1
    • 245.4-4ubuntu1
    • 245.4-4ubuntu3
    • 245.4-4ubuntu3.1
    • 245.4-4ubuntu3.2
    • 245.4-4ubuntu3.3
    • 245.4-4ubuntu3.4
    • 245.4-4ubuntu3.5
    • 245.4-4ubuntu3.6
    • 245.4-4ubuntu3.7
    • 245.4-4ubuntu3.10
    • 245.4-4ubuntu3.11
    • 245.4-4ubuntu3.13
    • 245.4-4ubuntu3.14
    • 245.4-4ubuntu3.15
    • 245.4-4ubuntu3.16
    • 245.4-4ubuntu3.17
    • 245.4-4ubuntu3.18
    • 245.4-4ubuntu3.19
    • 245.4-4ubuntu3.20
    • 245.4-4ubuntu3.21
    • 245.4-4ubuntu3.22
    • 245.4-4ubuntu3.23
    • 245.4-4ubuntu3.24
    • 245.4-4ubuntu3.24+esm1
    Affected ranges
    • ECOSYSTEM: < 245.4-4ubuntu3.24+esm3

    Update to 245.4-4ubuntu3.24+esm3

  • systemd Ubuntu:22.04:LTS

    Versions
    • 248.3-1ubuntu8
    • 249.5-2ubuntu1
    • 249.5-2ubuntu2
    • 249.5-2ubuntu3
    • 249.5-2ubuntu4
    • 249.9-0ubuntu2
    • 249.10-0ubuntu1
    • 249.10-0ubuntu2
    • 249.11-0ubuntu1
    • 249.11-0ubuntu2
    • 249.11-0ubuntu3
    • 249.11-0ubuntu3.1
    • 249.11-0ubuntu3.3
    • 249.11-0ubuntu3.4
    • 249.11-0ubuntu3.6
    • 249.11-0ubuntu3.7
    • 249.11-0ubuntu3.9
    • 249.11-0ubuntu3.10
    • 249.11-0ubuntu3.11
    • 249.11-0ubuntu3.12
    • 249.11-0ubuntu3.15
    • 249.11-0ubuntu3.16
    • 249.11-0ubuntu3.17
    Affected ranges
    • ECOSYSTEM: < 249.11-0ubuntu3.19

    Update to 249.11-0ubuntu3.19

  • systemd Ubuntu:24.04:LTS

    Versions
    • 253.5-1ubuntu6
    • 253.5-1ubuntu7
    • 255.2-3ubuntu2
    • 255.4-1ubuntu5
    • 255.4-1ubuntu6
    • 255.4-1ubuntu7
    • 255.4-1ubuntu8
    • 255.4-1ubuntu8.1
    • 255.4-1ubuntu8.2
    • 255.4-1ubuntu8.4
    • 255.4-1ubuntu8.5
    • 255.4-1ubuntu8.6
    • 255.4-1ubuntu8.8
    • 255.4-1ubuntu8.10
    • 255.4-1ubuntu8.11
    • 255.4-1ubuntu8.12
    Affected ranges
    • ECOSYSTEM: < 255.4-1ubuntu8.14

    Update to 255.4-1ubuntu8.14

  • systemd Ubuntu:25.10

    Versions
    • 257.4-1ubuntu3
    • 257.6-1ubuntu1
    • 257.7-1ubuntu1
    • 257.7-1ubuntu3
    • 257.8-0ubuntu2
    • 257.9-0ubuntu1
    • 257.9-0ubuntu2
    • 257.9-0ubuntu2.1
    Affected ranges
    • ECOSYSTEM: < 257.9-0ubuntu2.3

    Update to 257.9-0ubuntu2.3

Original sources

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