CVE-2026-110331

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ABRT Local Privilege Escalation via Directory Poisoning

Publication date: 2026-11-13

Last updated on: 2026-11-13

Assigner: redhat-SADP

Description

A flaw was found in abrt. The completeness check introduced to mitigate CVE-2026-54228 and CVE-2026-54229 only verifies that a dump directory contains a "count" element, which an unprivileged user can create. This allows a local attacker to bypass the guard and again poison elements in, or seize ownership of, dump directories while privileged ABRT handlers are processing them. Related Problems2 mutating methods remain ungated by the same check.

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Meta Information

Published

2026-11-13

Last Modified

2026-11-13

Generated

2026-11-14

AI Q&A

2026-11-14

EPSS Evaluated

N/A

NVD

CVE-2026-110331

EUVD

EUVD-2026-125778

Affected Vendors & Products

Vendor	Product	Version / Range
Red Hat	Red Hat Enterprise Linux 7	*
Red Hat	Red Hat Enterprise Linux 8	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-862	The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

Executive Summary

This vulnerability is in the ABRT (Automatic Bug Reporting Tool) software. A previous fix for other CVEs introduced a check to ensure dump directories contained a 'count' element to prevent unauthorized access. However, an attacker can create this 'count' element themselves, bypassing the check. This allows them to manipulate dump directories or take ownership of them while privileged ABRT processes are running.

Impact Analysis

If you use ABRT on a system, a local attacker could exploit this flaw to gain unauthorized access to sensitive data, modify system files, or disrupt services. Since ABRT handles crash reports, attackers might access crash data containing user information or system details.

Mitigation Strategies

Update the abrt package to the latest version that includes the fix for this flaw. Monitor Red Hat's security advisories for patches. Ensure proper permissions are set on dump directories to prevent unauthorized access.

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