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CVE-2026-3888

CVE-2026-3888 · Local Privilege Escalation in snapd

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

Local privilege escalation in snapd on Linux allows local attackers to get root privilege by re-creating snap's private /tmp directory when systemd-tmpfiles is configured to automatically clean up this directory. This issue affects Ubuntu 16.04 LTS, 18.04 LTS, 20.04 LTS, 22.04 LTS, and 24.04 LTS.

CVSS 7.8 · High · EPSS 1.4% · Public exploit · Fix available

Published
Updated

Stack: system

Affected products and versions

  • ubuntu 16.04 lts

    Versions
    • ≥ 2.61.4ubuntu0.16.04.1+esm2: Not affected (dpkg)

    No fix published

  • ubuntu 18.04 lts

    Versions
    • ≥ 2.61.4ubuntu0.18.04.1+esm2: Not affected (dpkg)

    No fix published

  • ubuntu 20.04 lts

    Versions
    • ≥ 2.67.1+20.04ubuntu1~esm1: Not affected (dpkg)

    No fix published

  • ubuntu 22.04 lts

    Versions
    • ≥ 2.73+ubuntu22.04.1: Not affected (dpkg)

    No fix published

  • ubuntu 24.04 lts

    Versions
    • ≥ 2.73+ubuntu24.04.2: Not affected (dpkg)

    No fix published

  • snapd Debian:12

    Versions
    • 2.57.6-1
    Affected ranges
    • ECOSYSTEM: < 2.57.6-1+deb12u1

    Update to 2.57.6-1+deb12u1

  • snapd Debian:13

    Versions
    • 2.68.3-3
    Affected ranges
    • ECOSYSTEM: < 2.68.3-3+deb13u1

    Update to 2.68.3-3+deb13u1

  • snapd Debian:14

    Versions
    • 2.68.3-3
    • 2.71-1
    • 2.71-2
    • 2.71-3
    • 2.72-1
    • 2.73-3
    • 2.73-4
    • 2.74.1-1
    • 2.75.2-1
    • 2.75.2-2
    Affected ranges
    • ECOSYSTEM: < 2.76-1

    Update to 2.76-1

  • snapd Ubuntu:Pro:16.04:LTS

    Versions
    • 1.9
    • 1.9.1.1
    • 1.9.2
    • 2.0
    • 2.0.1
    • 2.0.2
    • 2.0.3
    • 2.0.5
    • 2.0.8
    • 2.0.9
    • 2.0.10
    • 2.11+0.16.04
    • 2.12+0.16.04
    • 2.13
    • 2.14.2~16.04
    • 2.15.2ubuntu1
    • 2.16ubuntu3
    • 2.17.1ubuntu1
    • 2.20.1ubuntu1
    • 2.21
    • 2.22.2
    • 2.22.3
    • 2.22.6
    • 2.23.1
    • 2.24.1
    • 2.25
    • 2.26.10
    • 2.27.5
    • 2.28.5
    • 2.29.4.2
    • 2.32.3.2
    • 2.32.9
    • 2.33.1ubuntu2
    • 2.34.2
    • 2.34.2ubuntu0.1
    • 2.37.4
    • 2.37.4ubuntu0.1
    • 2.38
    • 2.39.2
    • 2.39.2ubuntu0.2
    • 2.40
    • 2.42.1
    • 2.45.1
    • 2.45.1ubuntu0.2
    • 2.46.1
    • 2.47.1
    • 2.48
    • 2.48.3
    • 2.54.3+16.04~esm2
    • 2.54.3+16.04.0ubuntu0.1~esm3
    • 2.54.3+16.04.0ubuntu0.1~esm4
    • 2.54.3+16.04.0ubuntu0.1~esm5
    • 2.54.3+16.04.0ubuntu0.1~esm6
    • 2.61.4ubuntu0.16.04.1+esm1
    Affected ranges
    • ECOSYSTEM: < 2.61.4ubuntu0.16.04.1+esm2

    Update to 2.61.4ubuntu0.16.04.1+esm2

  • snapd Ubuntu:Pro:18.04:LTS

    Versions
    • 2.28.5+17.10
    • 2.29.4.1+18.04
    • 2.29.4.2+18.04
    • 2.31.1+18.04
    • 2.32+18.04~pre5
    • 2.32+18.04~pre6
    • 2.32+18.04
    • 2.32.3.2+18.04
    • 2.32.5+18.04
    • 2.32.8+18.04
    • 2.32.9+18.04
    • 2.33.1+18.04ubuntu2
    • 2.34.2+18.04
    • 2.34.2+18.04.1
    • 2.37.1+18.04
    • 2.37.1.1+18.04
    • 2.37.4+18.04
    • 2.37.4+18.04.1
    • 2.38+18.04
    • 2.39.2+18.04
    • 2.40+18.04
    • 2.42.1+18.04
    • 2.45.1+18.04
    • 2.45.1+18.04.2
    • 2.46.1+18.04
    • 2.47.1+18.04
    • 2.48+18.04
    • 2.48.3+18.04
    • 2.49.2+18.04
    • 2.51.1+18.04
    • 2.54.2+18.04ubuntu1
    • 2.54.3+18.04
    • 2.54.3+18.04.2ubuntu0.1
    • 2.54.3+18.04.2ubuntu0.2
    • 2.55.5+18.04
    • 2.57.5+18.04
    • 2.57.5+18.04ubuntu0.1
    • 2.58+18.04
    • 2.58+18.04.1
    • 2.61.4ubuntu0.18.04.1+esm1
    Affected ranges
    • ECOSYSTEM: < 2.61.4ubuntu0.18.04.1+esm2

    Update to 2.61.4ubuntu0.18.04.1+esm2

  • snapd Ubuntu:Pro:20.04:LTS

    Versions
    • 2.41+19.10.1
    • 2.42.1+20.04
    • 2.43.3+git1.8109f8
    • 2.44~pre1+20.04
    • 2.44+20.04
    • 2.44.2+20.04
    • 2.44.3+20.04
    • 2.45.1+20.04
    • 2.45.1+20.04.2
    • 2.46.1+20.04
    • 2.47.1+20.04
    • 2.48+20.04
    • 2.48.3+20.04
    • 2.49.2+20.04
    • 2.51.1+20.04ubuntu2
    • 2.54.2+20.04ubuntu2
    • 2.54.3+20.04
    • 2.54.3+20.04.1
    • 2.54.3+20.04.1ubuntu0.1
    • 2.54.3+20.04.1ubuntu0.2
    • 2.54.3+20.04.1ubuntu0.3
    • 2.55.5+20.04
    • 2.57.5+20.04
    • 2.57.5+20.04ubuntu0.1
    • 2.58+20.04
    • 2.58+20.04.1
    • 2.61.3+20.04
    • 2.62+20.04
    • 2.63+20.04
    • 2.63+20.04ubuntu0.1
    • 2.65.3+20.04
    • 2.66.1+20.04
    • 2.67.1+20.04
    Affected ranges
    • ECOSYSTEM: < 2.67.1+20.04ubuntu1~esm1

    Update to 2.67.1+20.04ubuntu1~esm1

  • snapd Ubuntu:22.04:LTS

    Versions
    • 2.53+21.10ubuntu1
    • 2.54.2+22.04ubuntu1
    • 2.54.2+22.04ubuntu2
    • 2.54.2+22.04ubuntu3
    • 2.54.3+git19.g868fc21+22.04
    • 2.54.3+git26.g360067e+22.04
    • 2.55.2+22.04
    • 2.55.2+22.04.1
    • 2.55.3+22.04
    • 2.55.3+22.04ubuntu1
    • 2.55.5+22.04
    • 2.56.2+22.04ubuntu1
    • 2.57.4+22.04
    • 2.57.5+22.04
    • 2.57.5+22.04ubuntu0.1
    • 2.58+22.04
    • 2.58+22.04.1
    • 2.61.3+22.04
    • 2.62+22.04
    • 2.63+22.04
    • 2.63+22.04ubuntu0.1
    • 2.65.3+22.04
    • 2.66.1+22.04
    • 2.67.1+22.04
    • 2.68.5+ubuntu22.04.1
    • 2.71+ubuntu22.04
    • 2.72+ubuntu22.04
    • 2.73+ubuntu22.04
    Affected ranges
    • ECOSYSTEM: < 2.73+ubuntu22.04.1

    Update to 2.73+ubuntu22.04.1

  • snapd Ubuntu:24.04:LTS

    Versions
    • 2.60.4+23.10
    • 2.61.3+24.04
    • 2.62+24.04build1
    • 2.63+24.04
    • 2.63+24.04ubuntu0.1
    • 2.63.1+24.04
    • 2.65.3+24.04
    • 2.66.1+24.04
    • 2.67.1+24.04
    • 2.68.5+ubuntu24.04.1
    • 2.71+ubuntu24.04
    • 2.72+ubuntu24.04
    • 2.73+ubuntu24.04
    • 2.73+ubuntu24.04.1
    Affected ranges
    • ECOSYSTEM: < 2.73+ubuntu24.04.2

    Update to 2.73+ubuntu24.04.2

  • snapd Ubuntu:25.10

    Versions
    • 2.67.1+25.04
    • 2.68.5+ubuntu25.10.2
    • 2.71+ubuntu25.10
    • 2.71.1+ubuntu25.10.1
    • 2.72+ubuntu25.10.2
    • 2.73+ubuntu25.10
    Affected ranges
    • ECOSYSTEM: < 2.73+ubuntu25.10.1

    Update to 2.73+ubuntu25.10.1

  • snapd Ubuntu:26.04:LTS

    Versions
    • 2.71.1+ubuntu25.10.1
    • 2.72+ubuntu26.04.1
    • 2.73+ubuntu26.04.1
    • 2.74+ubuntu26.04
    • 2.74.1+ubuntu26.04
    Affected ranges
    • ECOSYSTEM: < 2.74.1+ubuntu26.04.3

    Update to 2.74.1+ubuntu26.04.3

Original sources

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