CVE-2026-54229

Summary

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.

Affected Software

VendorProductVersion RangeStatus
Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Support0:2.1.11-61.el7_9 < *unaffected
Red HatRed Hat Enterprise Linux 80:2.10.9-26.el8_10 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support0:2.10.9-25.el8_4.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On0:2.10.9-25.el8_4.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support0:2.10.9-25.el8_6.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On0:2.10.9-25.el8_6.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service0:2.10.9-25.el8_8.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions0:2.10.9-25.el8_8.1 < *unaffected

Weaknesses

  • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

abrt: ChownProblemDir succeeds during active post-create event processing due to inadequate locking

Additional References

References