Description
util-vserver before 0.30.208-1 with kernel-patch-vserver before 1.9.5.5 and 2.x before 2.3 for Debian GNU/Linux sets a default policy that trusts unknown capabilities, which could allow local users to conduct unauthorized activities.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 3.1 | kernel-patch-vserver | 1.9.5.4 | DSA-1011-1 |
| Debian 3.1 | util-vserver | 0.30.204-5sarge3 | DSA-1011-1 |
Advisories 1
- DSA-1011-1 kernel-patch-server, util-vserver - missing attribute support Debian Security (DSA / DLA) · Mar 9, 2026
References
- 19333 third-party-advisory
- DSA-1011 vendor-advisory
- debian-utilvserver-policy-bypass-security(25407) vdb-entry
- 17180 vdb-entry
- 19339 third-party-advisory