[NEW] [high] util-linux: Multiple Vulnerabilities
A local attacker can exploit multiple vulnerabilities in util-linux to bypass security precautions and perform administrative actions on access rights.
CSIRTS triage
- What
- Multiple vulnerabilities in util-linux allow local attackers to bypass security precautions and perform unauthorized administrative actions.
- Who is affected
- Local users on systems running util-linux.
- Urgency
- High severity; local privilege escalation poses significant risk to system integrity.
- Action
- Update util-linux to the latest patched version.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-3160
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-784090.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-784100.10% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 1% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-78409 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-78410 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- highCVE-2026-78410: Util-linux: util-linux: restricted bind mounts do not pin the source, allowing x-mount.owner/g…msrc
- highCVE-2026-78410: A flaw was found in util-linux. Restricted bind mounts take the source path from fstab but do …nvd
- highCVE-2026-78409: The X-mount.subdir option uses a detached-tree fast path on Linux 6.15 and later and passes th…nvd
Recent advisories for util-linux
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- highCVE-2026-78408: Util-linux: util-linux: nsenter --join-cgroup leaks root cgroup migration authoritymsrc · 2026-09-08
- highCVE-2026-78410: Util-linux: util-linux: restricted bind mounts do not pin the source, allowing x-mount.owner/g…msrc · 2026-09-08
- highCVE-2026-76642: util-linux libmount Privilege Escalation via Failed Mount Helpermsrc · 2026-09-08
- high[NEU] [hoch] util-linux: Schwachstelle ermöglicht Privilegieneskalationcert-bund · 2026-09-04
- highCVE-2026-76642: util-linux versions through 2.41.5 and 2.42.2 fail to check mount helper exit status before ru…nvd · 2026-09-03
- highCVE-2026-78410: A flaw was found in util-linux. Restricted bind mounts take the source path from fstab but do …nvd · 2026-09-02
More from CERT-Bund (BSI) Security Advisories
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- medium[UPDATE] [mittel] Unbound: Mehrere Schwachstellen2026-09-10
- high[UPDATE] [hoch] ffmpeg: Mehrere Schwachstellen2026-09-10
- high[UPDATE] [hoch] Internet Systems Consortium BIND: Mehrere Schwachstellen2026-09-10