CVE-2006-1319: chpst in runit 1.3.3-1 for Debian GNU/Linux, when compiled on little endian i386 machines against dietlibc, do

This month

MEDIUM 6.2WATCHLISTDOWNGRADE

CVE-2006-1319 is a medium-severity flaw (CVSS 6.2) affecting runit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

chpst in runit 1.3.3-1 for Debian GNU/Linux, when compiled on little endian i386 machines against dietlibc, does not properly handle when multiple groups are specified in the -u option, which causes chpst to assign permissions for the root group due to inconsistent bit sizes for the gid_t type.

Why this priority

Public exploit reference
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.2 (Medium)
EPSS exploit chance	0.5% (top 58%)
CISA exploited list	No
Published	2006-03-20
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: runit

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2006-03-20 11:02 UTCPublished CVE record published
2026-06-16 22:22 UTCUpdated Record last modified

runit runit DOWNGRADE

Affected: 1.3.3.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3.3.1

1. Check installed version

apt-cache policy runit || rpm -q runit || runit --version

2. No fixed release: DOWNGRADE to a release before 1.3.3.1 (Debian / Ubuntu)

apt-cache madison runit sudo apt install runit=<VERSION_BEFORE_1.3.3.1> sudo apt-mark hold runit

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list runit sudo dnf downgrade runit-<VERSION_BEFORE_1.3.3.1> sudo dnf versionlock add runit

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2006-1319?

runit: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2006-1319 being exploited?

CVE-2006-1319 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2006-1319 affect?

CVE-2006-1319 affects runit. Severity is medium (CVSS 6.2). chpst in runit 1.3.3-1 for Debian GNU/Linux, when compiled on little endian i386 machines against dietlibc, does not properly handle when multiple groups are specified in the -u option, which causes chpst to assign permissions for the root

How urgent is CVE-2006-1319?

Priority 42/100. Public exploit reference; On your watchlist

Software pages

Debian vulnerabilities

References

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