Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Fixed packages 3

Vulnerabilities 1

• Medium 6.7
  CVE-2026-4878

  Libcap: libcap: privilege escalation via toctou race condition in cap_set_file()

  A flaw was found in libcap. A local unprivileged user can exploit a Time-of-check-to-time-of-use (TOCTOU) race condition in the `cap_set_file()` function. This allows an attacker with write access to a parent directory to redirect file capability updates to a…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux Alpine
  Apr 9, 2026

References

• article
  https://images.redhat.com/
• report
  https://access.redhat.com/security/cve/CVE-2026-4878
• article
  https://access.redhat.com/security/updates/classification/
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_7473.json
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2451615
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-4878
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-4878
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2447554