p PatchFirst

CVE-2025-1020

CVE-2025-1020 · Memory safety bugs fixed in Firefox 135 and Thunderbird 135

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

Memory safety bugs present in Firefox 134 and Thunderbird 134. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 135 and Thunderbird 135.

CVSS 9.8 · Critical · EPSS 0.5% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • firefox

    Versions
    • ≥ 135: Not affected (rpm)

    No fix published

  • thunderbird

    Versions
    • ≥ 135: Not affected (rpm)

    No fix published

  • mozjs52 Ubuntu:18.04:LTS

    Versions
    • 52.3.1-0ubuntu3
    • 52.3.1-7fakesync1
    • 52.8.1-0ubuntu0.18.04.1
    • 52.9.1-0ubuntu0.18.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mozjs38 Ubuntu:18.04:LTS

    Versions
    • 38.8.0~repack1-0ubuntu1
    • 38.8.0~repack1-0ubuntu3
    • 38.8.0~repack1-0ubuntu4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • firefox Ubuntu:20.04:LTS

    Versions
    • 69.0.3+build1-0ubuntu1
    • 70.0+build2-0ubuntu1
    • 70.0+build2-0ubuntu2
    • 70.0.1+build1-0ubuntu2
    • 71.0+build2-0ubuntu2
    • 71.0+build5-0ubuntu1
    • 72.0.1+build1-0ubuntu1
    • 72.0.2+build1-0ubuntu1
    • 73.0+build1-0ubuntu1
    • 73.0+build2-0ubuntu1
    • 73.0+build3-0ubuntu1
    • 73.0.1+build1-0ubuntu1
    • 74.0+build1-0ubuntu1
    • 74.0+build2-0ubuntu1
    • 74.0+build2-0ubuntu2
    • 74.0+build3-0ubuntu1
    • 75.0+build3-0ubuntu1
    • 76.0+build2-0ubuntu0.20.04.1
    • 76.0.1+build1-0ubuntu0.20.04.1
    • 77.0.1+build1-0ubuntu0.20.04.1
    • 78.0.1+build1-0ubuntu0.20.04.1
    • 78.0.2+build2-0ubuntu0.20.04.1
    • 79.0+build1-0ubuntu0.20.04.1
    • 80.0+build2-0ubuntu0.20.04.1
    • 80.0.1+build1-0ubuntu0.20.04.1
    • 81.0+build2-0ubuntu0.20.04.1
    • 81.0.2+build1-0ubuntu0.20.04.1
    • 82.0+build2-0ubuntu0.20.04.1
    • 82.0.2+build1-0ubuntu0.20.04.1
    • 82.0.3+build1-0ubuntu0.20.04.1
    • 83.0+build2-0ubuntu0.20.04.1
    • 84.0+build3-0ubuntu0.20.04.1
    • 84.0.1+build1-0ubuntu0.20.04.1
    • 84.0.2+build1-0ubuntu0.20.04.1
    • 85.0+build1-0ubuntu0.20.04.1
    • 85.0.1+build1-0ubuntu0.20.04.1
    • 86.0+build3-0ubuntu0.20.04.1
    • 86.0.1+build1-0ubuntu0.20.04.1
    • 87.0+build3-0ubuntu0.20.04.2
    • 88.0+build2-0ubuntu0.20.04.1
    • 88.0.1+build1-0ubuntu0.20.04.2
    • 89.0+build2-0ubuntu0.20.04.2
    • 89.0.1+build1-0ubuntu0.20.04.1
    • 89.0.2+build1-0ubuntu0.20.04.1
    • 90.0+build1-0ubuntu0.20.04.1
    • 90.0.2+build1-0ubuntu0.20.04.1
    • 91.0+build2-0ubuntu0.20.04.1
    • 91.0.1+build1-0ubuntu0.20.04.1
    • 91.0.2+build1-0ubuntu0.20.04.1
    • 92.0+build3-0ubuntu0.20.04.1
    • 93.0+build1-0ubuntu0.20.04.1
    • 94.0+build3-0ubuntu0.20.04.1
    • 95.0+build1-0ubuntu0.20.04.1
    • 95.0.1+build2-0ubuntu0.20.04.1
    • 96.0+build2-0ubuntu0.20.04.1
    • 97.0+build2-0ubuntu0.20.04.1
    • 97.0.2+build1-0ubuntu0.20.04.1
    • 98.0+build3-0ubuntu0.20.04.2
    • 98.0.1+build2-0ubuntu0.20.04.1
    • 98.0.2+build1-0ubuntu0.20.04.1
    • 99.0+build2-0ubuntu0.20.04.2
    • 100.0+build2-0ubuntu0.20.04.1
    • 100.0.2+build1-0ubuntu0.20.04.1
    • 101.0.1+build1-0ubuntu0.20.04.1
    • 102.0+build2-0ubuntu0.20.04.1
    • 103.0+build1-0ubuntu0.20.04.1
    • 104.0+build3-0ubuntu0.20.04.1
    • 105.0+build2-0ubuntu0.20.04.1
    • 106.0.2+build1-0ubuntu0.20.04.1
    • 106.0.5+build1-0ubuntu0.20.04.1
    • 107.0+build2-0ubuntu0.20.04.1
    • 108.0+build2-0ubuntu0.20.04.1
    • 108.0.1+build1-0ubuntu0.20.04.1
    • 108.0.2+build1-0ubuntu0.20.04.1
    • 109.0+build2-0ubuntu0.20.04.1
    • 109.0.1+build1-0ubuntu0.20.04.2
    • 110.0+build3-0ubuntu0.20.04.1
    • 110.0.1+build2-0ubuntu0.20.04.1
    • 111.0+build2-0ubuntu0.20.04.1
    • 111.0.1+build2-0ubuntu0.20.04.1
    • 112.0+build2-0ubuntu0.20.04.1
    • 112.0.1+build1-0ubuntu0.20.04.1
    • 112.0.2+build1-0ubuntu0.20.04.1
    • 113.0+build2-0ubuntu0.20.04.1
    • 113.0.1+build1-0ubuntu0.20.04.1
    • 113.0.2+build1-0ubuntu0.20.04.1
    • 114.0+build3-0ubuntu0.20.04.1
    • 114.0.1+build1-0ubuntu0.20.04.1
    • 114.0.2+build1-0ubuntu0.20.04.1
    • 115.0+build2-0ubuntu0.20.04.3
    • 115.0.2+build1-0ubuntu0.20.04.1
    • 116.0+build2-0ubuntu0.20.04.2
    • 116.0.2+build1-0ubuntu0.20.04.1
    • 116.0.3+build2-0ubuntu0.20.04.1
    • 117.0+build2-0ubuntu0.20.04.1
    • 117.0.1+build2-0ubuntu0.20.04.1
    • 118.0.1+build1-0ubuntu0.20.04.1
    • 118.0.2+build2-0ubuntu0.20.04.1
    • 119.0+build2-0ubuntu0.20.04.1
    • 119.0.1+build1-0ubuntu0.20.04.1
    • 120.0+build2-0ubuntu0.20.04.1
    • 120.0.1+build1-0ubuntu0.20.04.1
    • 121.0+build1-0ubuntu0.20.04.1
    • 121.0.1+build1-0ubuntu0.20.04.1
    • 122.0+build2-0ubuntu0.20.04.1
    • 122.0.1+build1-0ubuntu0.20.04.1
    • 123.0+build3-0ubuntu0.20.04.1
    • 123.0.1+build1-0ubuntu0.20.04.1
    • 124.0+build1-0ubuntu0.20.04.1
    • 124.0.1+build1-0ubuntu0.20.04.1
    • 124.0.2+build1-0ubuntu0.20.04.1
    • 125.0.2+build1-0ubuntu0.20.04.2
    • 125.0.3+build1-0ubuntu0.20.04.1
    • 126.0+build2-0ubuntu0.20.04.1
    • 126.0.1+build1-0ubuntu0.20.04.1
    • 127.0.2+build1-0ubuntu0.20.04.1
    • 128.0+build2-0ubuntu0.20.04.1
    • 129.0.1+build1-0ubuntu0.20.04.1
    • 129.0.2+build1-0ubuntu0.20.04.1
    • 130.0+build2-0ubuntu0.20.04.1
    • 130.0.1+build1-0ubuntu0.20.04.1
    • 131.0+build1.1-0ubuntu0.20.04.1
    • 131.0.2+build1-0ubuntu0.20.04.1
    • 131.0.3+build1-0ubuntu0.20.04.1
    • 132.0+build1-0ubuntu0.20.04.1
    • 133.0+build2-0ubuntu0.20.04.1
    • 134.0+build1-0ubuntu0.20.04.1
    Affected ranges
    • ECOSYSTEM: < 135.0+build2-0ubuntu0.20.04.1

    Update to 135.0+build2-0ubuntu0.20.04.1

  • mozjs68 Ubuntu:20.04:LTS

    Versions
    • 68.5.0-1~fakesync
    • 68.5.0-2~fakesync
    • 68.6.0-1
    • 68.6.0-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mozjs52 Ubuntu:20.04:LTS

    Versions
    • 52.9.1-1build1
    • 52.9.1-1ubuntu3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mozjs102 Ubuntu:22.04:LTS

    Versions
    • 102.11.0-0ubuntu0.22.04.1
    • 102.12.0-0ubuntu0.22.04.1
    • 102.13.0-0ubuntu0.22.04.1
    • 102.15.1-0ubuntu0.22.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mozjs78 Ubuntu:22.04:LTS

    Versions
    • 78.13.0-1
    • 78.15.0-2
    • 78.15.0-4ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mozjs91 Ubuntu:22.04:LTS

    Versions
    • 91.5.1-0ubuntu1
    • 91.6.0-1
    • 91.6.0-2
    • 91.7.0-2
    • 91.10.0-0ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • thunderbird Ubuntu:22.04:LTS

    Versions
    • 1:91.1.2+build1-0ubuntu1
    • 1:91.3.0+build2-0ubuntu1
    • 1:91.3.1+build1-0ubuntu1
    • 1:91.3.2+build1-0ubuntu1
    • 1:91.4.0+build1.1-0ubuntu1
    • 1:91.4.0+build2-0ubuntu1
    • 1:91.5.0+build1-0ubuntu1
    • 1:91.5.1+build1-0ubuntu1
    • 1:91.6.1+build1-0ubuntu1
    • 1:91.7.0+build1-0ubuntu1
    • 1:91.7.0+build2-0ubuntu1
    • 1:91.8.0+build2-0ubuntu1
    • 1:91.9.1+build1-0ubuntu0.22.04.1
    • 1:91.11.0+build2-0ubuntu0.22.04.1
    • 1:102.2.2+build1-0ubuntu0.22.04.1
    • 1:102.4.2+build2-0ubuntu0.22.04.1
    • 1:102.7.1+build2-0ubuntu0.22.04.1
    • 1:102.8.0+build2-0ubuntu0.22.04.1
    • 1:102.9.0+build1-0ubuntu0.22.04.1
    • 1:102.10.0+build2-0ubuntu0.22.04.1
    • 1:102.11.0+build1-0ubuntu0.22.04.1
    • 1:102.13.0+build1-0ubuntu0.22.04.1
    • 1:102.15.0+build1-0ubuntu0.22.04.1
    • 1:102.15.1+build1-0ubuntu0.22.04.1
    • 1:115.3.1+build1-0ubuntu0.22.04.2
    • 1:115.4.1+build1-0ubuntu0.22.04.1
    • 1:115.5.0+build1-0ubuntu0.22.04.1
    • 1:115.6.0+build2-0ubuntu0.22.04.1
    • 1:115.8.1+build1-0ubuntu0.22.04.1
    • 1:115.9.0+build1-0ubuntu0.22.04.1
    • 1:115.10.1+build1-0ubuntu0.22.04.1
    • 1:115.11.0+build2-0ubuntu0.22.04.1
    • 1:115.12.0+build3-0ubuntu0.22.04.1
    • 1:115.13.0+build5-0ubuntu0.22.04.1
    • 1:115.15.0+build1-0ubuntu0.22.04.1
    • 1:115.16.0+build2-0ubuntu0.22.04.1
    • 1:115.18.0+build1-0ubuntu0.22.04.1
    • 1:128.12.0+build1-0ubuntu0.22.04.1
    Affected ranges
    • ECOSYSTEM: < 1:140.7.1+build1-0ubuntu0.22.04.1

    Update to 1:140.7.1+build1-0ubuntu0.22.04.1

  • mozjs102 Ubuntu:24.04:LTS

    Versions
    • 102.15.1-1
    • 102.15.1-3ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mozjs115 Ubuntu:24.04:LTS

    Versions
    • 115.3.0-0ubuntu1
    • 115.4.0-2
    • 115.5.0-1
    • 115.6.0-1
    • 115.7.0-4
    • 115.8.0-1
    • 115.9.0-1
    • 115.9.0-1build1
    • 115.10.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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