Advisories » MGASA-2026-0221

Updated libcap packages fix security vulnerabilities

Publication date: 18 Jun 2026
Modification date: 18 Jun 2026
Type: security
Affected Mageia releases : 9
CVE: CVE-2026-4878

Description

CVE-2026-4878. 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 an
attacker-controlled file. By doing so, capabilities can be injected into
or stripped from unintended executables, leading to privilege
escalation.
                

References

• https://bugs.mageia.org/show_bug.cgi?id=35329
• https://www.openwall.com/lists/oss-security/2026/04/07/4
• https://www.openwall.com/lists/oss-security/2026/04/07/14
• https://www.cve.org/CVERecord?id=CVE-2026-4878

SRPMS

9/core

• libcap-2.52-5.2.mga9