CVE-2026-84410

apport: Local privilege escalation to root via ldd execution on an attacker-controlled ExecutablePath in automatic crash report processing

Published Nov 9, 2026 CVSS 4.0 · 7.3 High EPSS < 1% KEV · Not listed
Description
In apport before 2.37.0, an improper privilege management vulnerability allows an unprivileged local attacker to gain root privileges on systems where automatic crash reporting is enabled. The automatic crash report processing pipeline runs as root and executes ldd on the attacker-controlled ExecutablePath field of a crash file placed in the world-writable /var/crash directory, causing the dynamic loader to load and execute an attacker-supplied audit module specified by the ELF's DT_AUDIT tag. This allows an attacker to execute arbitrary code with root privileges and fully compromise the affected system.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

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History
Type Values Removed Values Added
First Time appeared Canonical
Canonical apport
Vendors & Products Canonical
Canonical apport
Type Values Removed Values Added
Description In apport before 2.37.0, an improper privilege management vulnerability allows an unprivileged local attacker to gain root privileges on systems where automatic crash reporting is enabled. The automatic crash report processing pipeline runs as root and executes ldd on the attacker-controlled ExecutablePath field of a crash file placed in the world-writable /var/crash directory, causing the dynamic loader to load and execute an attacker-supplied audit module specified by the ELF's DT_AUDIT tag. This allows an attacker to execute arbitrary code with root privileges and fully compromise the affected system.
Title apport: Local privilege escalation to root via ldd execution on an attacker-controlled ExecutablePath in automatic crash report processing
Weaknesses CWE-269
References
Metrics cvssV4_0

{'score': 7.3, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
canonical
Published
Updated
Nov 12, 2026, 4:53 PM
Reserved
Sep 23, 2026, 2:22 PM
Status
Awaiting Analysis
Published
Nov 9, 2026, 10:18 PM
Modified
Nov 12, 2026, 8:04 PM