CVE-2026-54229 PUBLISHED

Abrt: chownproblemdir succeeds during active post-create event processing due to inadequate locking

Assigner: redhat
Reserved: 12.06.2026 Published: 13.06.2026 Updated: 13.06.2026

A race condition was found in the abrt-dbus D-Bus service's ChownProblemDir method. ChownProblemDir opens the dump directory with DD_OPEN_READONLY and calls dd_chown to change ownership of all files to the caller's uid, succeeding even while post-create event handlers hold a write lock. This allows an attacker to gain filesystem-level control of the dump directory while privileged event scripts are still running.

Metrics

CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 7

Product Status

Vendor Red Hat
Product Red Hat Enterprise Linux 6
Versions Default: unknown
Vendor Red Hat
Product Red Hat Enterprise Linux 7
Versions Default: affected
Vendor Red Hat
Product Red Hat Enterprise Linux 8
Versions Default: affected

Workarounds

The following practices would help for avoiding exposure and mitigate this flaw:

  • Disable or remove ABRT if it is not required. On RHEL 8 systems where ABRT is installed, it can be disabled with: systemctl disable --now abrtd.service abrt-journal-core.service abrt-oops.service abrt-xorg.service
  • On Fedora systems, consider using systemd-coredump instead of ABRT for crash handling
  • Restrict local user access to systems running ABRT, as this vulnerability requires local access

Credits

  • Red Hat would like to thank Red Team (Deutsche Telekom Security GmbH) for reporting this issue.

References

Problem Types

  • Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE