# OPENSUSE-SU-2026:21905-1: Security update for 3 packages

OPENSUSE-SU-2026:21905-1, released September 22, 2026, fixes 8 CVEs across 3 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/opensuse-su-2026-21905-1
- Platform: Linux
- Released: Sep 22, 2026
- Priority: High (Closes CVE-2026-78408, high severity)
- CVEs: 8, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/openSUSE-SU-2026:21905-1

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [python-libmount](https://patchblox.com/security/data/product/linux/python-libmount.md) | opensuse-leap 16.0 | 2.41.1-160000.5.1 |
| [util-linux](https://patchblox.com/security/data/product/linux/util-linux.md) | opensuse-leap 16.0 | 2.41.1-160000.5.1 |
| [util-linux-systemd](https://patchblox.com/security/data/product/linux/util-linux-systemd.md) | opensuse-leap 16.0 | 2.41.1-160000.5.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-78408](https://patchblox.com/security/data/cve/CVE-2026-78408.md) | High | Util-linux: util-linux: nsenter --join-cgroup leaks root cgroup migration authority | 8.0 | 0.0024 |  |
| [CVE-2026-76642](https://patchblox.com/security/data/cve/CVE-2026-76642.md) | High | util-linux libmount Privilege Escalation via Failed Mount Helper | 8.0 | 0.0022 |  |
| [CVE-2026-78410](https://patchblox.com/security/data/cve/CVE-2026-78410.md) | High | Util-linux: util-linux: restricted bind mounts do not pin the source, allowing x-mount.owner/group/mode redirection | 8.0 | 0.0020 |  |
| [CVE-2026-53613](https://patchblox.com/security/data/cve/CVE-2026-53613.md) | High | util-linux mount target TOCTOU allows local privilege escalation | 8.0 | 0.0016 |  |
| [CVE-2026-27456](https://patchblox.com/security/data/cve/CVE-2026-27456.md) | High | util-linux: TOCTOU Race Condition in util-linux mount(8) - Loop Device Setup | 8.0 | 0.0016 |  |
| [CVE-2026-53612](https://patchblox.com/security/data/cve/CVE-2026-53612.md) | High | util-linux mount hook_owner TOCTOU allows local privilege escalation | 8.0 | 0.0015 |  |
| [CVE-2026-13595](https://patchblox.com/security/data/cve/CVE-2026-13595.md) | High | util-linux: A flaw was found in the libblkid library of util-linux | 8.0 | 0.0014 |  |
| [CVE-2026-53614](https://patchblox.com/security/data/cve/CVE-2026-53614.md) | High | util-linux LIBMOUNT_FORCE_MOUNT2 allows nosuid and noexec bypass | 8.0 | 0.0013 |  |

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Data as of 2026-11-10T20:03:11Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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