UBUNTU-CVE-2026-78367

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Source
https://ubuntu.com/security/CVE-2026-78367
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-78367.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-78367
Upstream
  • CVE-2026-78367
Published
2026-08-24T14:17:00Z
Modified
2026-09-02T19:36:47Z
Severity
  • 7.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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).

References

Affected packages

Ubuntu:22.04:LTS
rpm

Package

Name
rpm
Purl
pkg:deb/ubuntu/rpm?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
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

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "librpm9",
            "binary_version":  "4.17.0+dfsg1-4build1"
        },
        {
            "binary_name":  "librpmbuild9",
            "binary_version":  "4.17.0+dfsg1-4build1"
        },
        {
            "binary_name":  "librpmio9",
            "binary_version":  "4.17.0+dfsg1-4build1"
        },
        {
            "binary_name":  "librpmsign9",
            "binary_version":  "4.17.0+dfsg1-4build1"
        },
        {
            "binary_name":  "python3-rpm",
            "binary_version":  "4.17.0+dfsg1-4build1"
        },
        {
            "binary_name":  "rpm",
            "binary_version":  "4.17.0+dfsg1-4build1"
        },
        {
            "binary_name":  "rpm-common",
            "binary_version":  "4.17.0+dfsg1-4build1"
        },
        {
            "binary_name":  "rpm-i18n",
            "binary_version":  "4.17.0+dfsg1-4build1"
        },
        {
            "binary_name":  "rpm2cpio",
            "binary_version":  "4.17.0+dfsg1-4build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-78367.json"
Ubuntu:24.04:LTS
rpm

Package

Name
rpm
Purl
pkg:deb/ubuntu/rpm?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
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

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "librpm9t64",
            "binary_version":  "4.18.2+dfsg-2.1build2"
        },
        {
            "binary_name":  "librpmbuild9t64",
            "binary_version":  "4.18.2+dfsg-2.1build2"
        },
        {
            "binary_name":  "librpmio9t64",
            "binary_version":  "4.18.2+dfsg-2.1build2"
        },
        {
            "binary_name":  "librpmsign9t64",
            "binary_version":  "4.18.2+dfsg-2.1build2"
        },
        {
            "binary_name":  "python3-rpm",
            "binary_version":  "4.18.2+dfsg-2.1build2"
        },
        {
            "binary_name":  "rpm",
            "binary_version":  "4.18.2+dfsg-2.1build2"
        },
        {
            "binary_name":  "rpm-common",
            "binary_version":  "4.18.2+dfsg-2.1build2"
        },
        {
            "binary_name":  "rpm-i18n",
            "binary_version":  "4.18.2+dfsg-2.1build2"
        },
        {
            "binary_name":  "rpm2cpio",
            "binary_version":  "4.18.2+dfsg-2.1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-78367.json"
Ubuntu:26.04:LTS
rpm

Package

Name
rpm
Purl
pkg:deb/ubuntu/rpm?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.20.1+dfsg-3
6.*
6.0.0-2
6.0.1-1
6.0.1-1build1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "librpm10",
            "binary_version":  "6.0.1-1build1"
        },
        {
            "binary_name":  "librpmbuild10",
            "binary_version":  "6.0.1-1build1"
        },
        {
            "binary_name":  "librpmio10",
            "binary_version":  "6.0.1-1build1"
        },
        {
            "binary_name":  "librpmsign10",
            "binary_version":  "6.0.1-1build1"
        },
        {
            "binary_name":  "python3-rpm",
            "binary_version":  "6.0.1-1build1"
        },
        {
            "binary_name":  "rpm",
            "binary_version":  "6.0.1-1build1"
        },
        {
            "binary_name":  "rpm-common",
            "binary_version":  "6.0.1-1build1"
        },
        {
            "binary_name":  "rpm2cpio",
            "binary_version":  "6.0.1-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-78367.json"
Ubuntu:Pro:14.04:LTS
rpm

Package

Name
rpm
Purl
pkg:deb/ubuntu/rpm?arch=source&distro=trusty%2Fesm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.11.1-2
4.11.1-3
4.11.1-3ubuntu0.1
4.11.1-3ubuntu0.1+esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "debugedit",
            "binary_version":  "4.11.1-3ubuntu0.1+esm1"
        },
        {
            "binary_name":  "librpm3",
            "binary_version":  "4.11.1-3ubuntu0.1+esm1"
        },
        {
            "binary_name":  "librpmbuild3",
            "binary_version":  "4.11.1-3ubuntu0.1+esm1"
        },
        {
            "binary_name":  "librpmio3",
            "binary_version":  "4.11.1-3ubuntu0.1+esm1"
        },
        {
            "binary_name":  "librpmsign1",
            "binary_version":  "4.11.1-3ubuntu0.1+esm1"
        },
        {
            "binary_name":  "python-rpm",
            "binary_version":  "4.11.1-3ubuntu0.1+esm1"
        },
        {
            "binary_name":  "rpm",
            "binary_version":  "4.11.1-3ubuntu0.1+esm1"
        },
        {
            "binary_name":  "rpm-common",
            "binary_version":  "4.11.1-3ubuntu0.1+esm1"
        },
        {
            "binary_name":  "rpm-i18n",
            "binary_version":  "4.11.1-3ubuntu0.1+esm1"
        },
        {
            "binary_name":  "rpm2cpio",
            "binary_version":  "4.11.1-3ubuntu0.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-78367.json"
Ubuntu:Pro:16.04:LTS
rpm

Package

Name
rpm
Purl
pkg:deb/ubuntu/rpm?arch=source&distro=esm-apps%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.12.0.1+dfsg1-3build2
4.12.0.1+dfsg1-3build3
4.12.0.1+dfsg1-3ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "debugedit",
            "binary_version":  "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
        },
        {
            "binary_name":  "librpm3",
            "binary_version":  "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
        },
        {
            "binary_name":  "librpmbuild3",
            "binary_version":  "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
        },
        {
            "binary_name":  "librpmio3",
            "binary_version":  "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
        },
        {
            "binary_name":  "librpmsign3",
            "binary_version":  "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
        },
        {
            "binary_name":  "python-rpm",
            "binary_version":  "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
        },
        {
            "binary_name":  "python3-rpm",
            "binary_version":  "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
        },
        {
            "binary_name":  "rpm",
            "binary_version":  "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
        },
        {
            "binary_name":  "rpm-common",
            "binary_version":  "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
        },
        {
            "binary_name":  "rpm-i18n",
            "binary_version":  "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
        },
        {
            "binary_name":  "rpm2cpio",
            "binary_version":  "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-78367.json"
Ubuntu:Pro:18.04:LTS
rpm

Package

Name
rpm
Purl
pkg:deb/ubuntu/rpm?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.12.0.2+dfsg1-2build2
4.14.0+dfsg1-2
4.14.1+dfsg1-2
4.14.1+dfsg1-2ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "debugedit",
            "binary_version":  "4.14.1+dfsg1-2ubuntu0.1~esm1"
        },
        {
            "binary_name":  "librpm8",
            "binary_version":  "4.14.1+dfsg1-2ubuntu0.1~esm1"
        },
        {
            "binary_name":  "librpmbuild8",
            "binary_version":  "4.14.1+dfsg1-2ubuntu0.1~esm1"
        },
        {
            "binary_name":  "librpmio8",
            "binary_version":  "4.14.1+dfsg1-2ubuntu0.1~esm1"
        },
        {
            "binary_name":  "librpmsign8",
            "binary_version":  "4.14.1+dfsg1-2ubuntu0.1~esm1"
        },
        {
            "binary_name":  "python-rpm",
            "binary_version":  "4.14.1+dfsg1-2ubuntu0.1~esm1"
        },
        {
            "binary_name":  "python3-rpm",
            "binary_version":  "4.14.1+dfsg1-2ubuntu0.1~esm1"
        },
        {
            "binary_name":  "rpm",
            "binary_version":  "4.14.1+dfsg1-2ubuntu0.1~esm1"
        },
        {
            "binary_name":  "rpm-common",
            "binary_version":  "4.14.1+dfsg1-2ubuntu0.1~esm1"
        },
        {
            "binary_name":  "rpm-i18n",
            "binary_version":  "4.14.1+dfsg1-2ubuntu0.1~esm1"
        },
        {
            "binary_name":  "rpm2cpio",
            "binary_version":  "4.14.1+dfsg1-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-78367.json"
Ubuntu:Pro:20.04:LTS
rpm

Package

Name
rpm
Purl
pkg:deb/ubuntu/rpm?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
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

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "debugedit",
            "binary_version":  "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "librpm8",
            "binary_version":  "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "librpmbuild8",
            "binary_version":  "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "librpmio8",
            "binary_version":  "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "librpmsign8",
            "binary_version":  "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "python-rpm",
            "binary_version":  "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "python3-rpm",
            "binary_version":  "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "rpm",
            "binary_version":  "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "rpm-common",
            "binary_version":  "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "rpm-i18n",
            "binary_version":  "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "rpm2cpio",
            "binary_version":  "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-78367.json"