medium6.7
CVE-2026-4878
A flaw was found in libcap.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Libcap Project | Libcap | All versions |
| Redhat | Openshift Container Platform | Version 4.0 |
| Redhat | Enterprise Linux | Versions 8.0, 9.0, 10.0 |
Weakness classification
References
- NVD record
- CVE.org record
- https://access.redhat.com/errata/RHSA-2026:12423
- https://access.redhat.com/errata/RHSA-2026:12441
- https://access.redhat.com/errata/RHSA-2026:13285
- https://access.redhat.com/errata/RHSA-2026:14162
- https://access.redhat.com/errata/RHSA-2026:14937
- https://access.redhat.com/errata/RHSA-2026:19130
- https://access.redhat.com/errata/RHSA-2026:19346
- https://access.redhat.com/errata/RHSA-2026:19456
- https://access.redhat.com/errata/RHSA-2026:19458
- https://access.redhat.com/errata/RHSA-2026:20595
- https://access.redhat.com/errata/RHSA-2026:21254
- https://access.redhat.com/errata/RHSA-2026:21275
- https://access.redhat.com/errata/RHSA-2026:22634
- https://access.redhat.com/errata/RHSA-2026:22957
- https://access.redhat.com/errata/RHSA-2026:23233
- https://access.redhat.com/errata/RHSA-2026:23245
- https://access.redhat.com/errata/RHSA-2026:24346
- https://access.redhat.com/errata/RHSA-2026:25044
- https://access.redhat.com/errata/RHSA-2026:25096
- https://access.redhat.com/errata/RHSA-2026:25181
- https://access.redhat.com/errata/RHSA-2026:26542
- https://access.redhat.com/errata/RHSA-2026:27998
- https://access.redhat.com/errata/RHSA-2026:28887
- https://access.redhat.com/errata/RHSA-2026:29197
- https://access.redhat.com/errata/RHSA-2026:30078