Copyright © 2012 Red Hat, Inc. All rights reserved. Important 2026-11-13T20:53:00 abrt: abrt: incomplete CVE-2026-54228/54229 fix — completeness gate bypassed via attacker-supplied count element 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CWE-862

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.

This issue is distinct from CVE-2026-54228 and CVE-2026-54229: it concerns an incomplete mitigation that leaves those primitives reachable. The O_NOFOLLOW-less shell writes in event handlers are tracked separately as CVE-2026-54230. Red Hat would like to thank Vivek Parikh (BreachX Zero Day Labs) for reporting this issue. Disable or remove ABRT if not required: systemctl disable --now abrtd.service abrt-journal-core.service abrt-oops.service abrt-xorg.service. Restrict local interactive user access on systems that keep abrt installed. Note that abrt-dbus is D-Bus activatable even when abrtd is stopped. Red Hat Enterprise Linux 6 Out of support scope abrt Red Hat Enterprise Linux 7 Affected abrt Red Hat Enterprise Linux 8 Affected abrt https://www.cve.org/CVERecord?id=CVE-2026-110331 https://nvd.nist.gov/vuln/detail/CVE-2026-110331