EULEROS-SA-2026-2539

Summary:

An update for libcap is now available for EulerOS V2.0SP12(x86_64)

EulerOS Security has rated this update as having a security impact of Important.A Common Vunlnerability Scoring System(CVSS)base score, which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section.General:

libcap is a library for getting and setting POSIX.1e (formerly POSIX 6) draft 15 capabilities.

Security Fix(es):

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.(CVE-2026-4878)Legal Disclaimer:

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