Description
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.
Details
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| libcap2 | — | 1:2.75-7ubuntu2.2 |
References
Similar Threats
- Unknown CLSA-2026-1778599539
- Unknown CLSA-2026-1778599722
- Unknown CLSA-2026-1777941636
- Unknown USN-8193-1
- Unknown DEBIAN-CVE-2026-4878
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