p PatchFirst

CVE-2026-78367

CVE-2026-78367 · Rpm: rpmbuild gettarspec() crafted tar member name → macro injection

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

A vulnerability was found in RPM's rpmbuild tarball processing. When processing a crafted source archive, the getTarSpec() function in tools/rpmbuild.cc passes an attacker-controlled tar archive member name to rpmExpand() as part of a %{basename:...} macro expression. A specially crafted .spec member name can therefore inject RPM macros, including Lua expressions, resulting in arbitrary code execution with the privileges of the user running rpmbuild. This can be exploited when a victim or automated build system processes an attacker-controlled source tarball using rpmbuild tarball mode (such as -ts, -ta, or -tb).

CVSS 7.0 · High · EPSS 0.2%

Published
Updated

Stack: system

Affected products and versions

  • red hat hardened images

    Versions
    • ≥ 6.1.0-1.3.hum1: Not affected (rpm)

    No fix published

  • red hat enterprise linux 10

    No fix published

  • red hat enterprise linux 6

    No fix published

  • red hat enterprise linux 7

    No fix published

  • red hat enterprise linux 8

    No fix published

  • red hat enterprise linux 9

    No fix published

  • rpm Debian:12

    Versions
    • 4.18.0+dfsg-1
    • 4.18.0+dfsg-1+deb12u1
    • 4.18.2+dfsg-1
    • 4.18.2+dfsg-1.1~exp1
    • 4.18.2+dfsg-2
    • 4.18.2+dfsg-2.1
    • 4.18.2+dfsg-2.1~exp1
    • 4.19.1.1+dfsg-1
    • 4.19.1.1+dfsg-1~exp
    • 4.20.0+dfsg-1
    • 4.20.0+dfsg-2
    • 4.20.0+dfsg-3
    • 4.20.0+dfsg-4
    • 4.20.1+dfsg-1
    • 4.20.1+dfsg-2
    • 4.20.1+dfsg-3
    • 6.0.0-1
    • 6.0.0-2
    • 6.0.1-1
    • 6.1.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rpm Debian:13

    Versions
    • 4.20.1+dfsg-3
    • 6.0.0-1
    • 6.0.0-2
    • 6.0.1-1
    • 6.1.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rpm Debian:14

    Versions
    • 4.20.1+dfsg-3
    • 6.0.0-1
    • 6.0.0-2
    • 6.0.1-1
    • 6.1.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rpm Ubuntu:Pro:14.04:LTS

    Versions
    • 4.11.1-2
    • 4.11.1-3
    • 4.11.1-3ubuntu0.1
    • 4.11.1-3ubuntu0.1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rpm Ubuntu:Pro:16.04:LTS

    Versions
    • 4.12.0.1+dfsg1-3build2
    • 4.12.0.1+dfsg1-3build3
    • 4.12.0.1+dfsg1-3ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rpm Ubuntu:Pro:18.04:LTS

    Versions
    • 4.12.0.2+dfsg1-2build2
    • 4.14.0+dfsg1-2
    • 4.14.1+dfsg1-2
    • 4.14.1+dfsg1-2ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rpm Ubuntu:Pro:20.04:LTS

    Versions
    • 4.14.2.1+dfsg1-1
    • 4.14.2.1+dfsg1-1build1
    • 4.14.2.1+dfsg1-1build2
    • 4.14.2.1+dfsg1-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rpm Ubuntu:22.04:LTS

    Versions
    • 4.16.1.2+dfsg1-3ubuntu1
    • 4.16.1.2+dfsg1-3ubuntu3
    • 4.17.0+dfsg1-1
    • 4.17.0+dfsg1-3
    • 4.17.0+dfsg1-4
    • 4.17.0+dfsg1-4build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rpm Ubuntu:24.04:LTS

    Versions
    • 4.18.0+dfsg-1build1
    • 4.18.0+dfsg-1build2
    • 4.18.2+dfsg-1
    • 4.18.2+dfsg-2
    • 4.18.2+dfsg-2.1build1
    • 4.18.2+dfsg-2.1build2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rpm Ubuntu:26.10

    Versions
    • 6.0.1-1build1
    • 6.1.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rpm Ubuntu:26.04:LTS

    Versions
    • 4.20.1+dfsg-3
    • 6.0.0-2
    • 6.0.1-1
    • 6.0.1-1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

Check your server →