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CVE-2026-35340: A flaw in the ChownExecutor used by uutils coreutils chown and chgrp causes the utilities to return an incorre

20
Routine
MEDIUM 5.5UPGRADE

CVE-2026-35340 is a medium-severity flaw (CVSS 5.5) affecting coreutils. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A flaw in the ChownExecutor used by uutils coreutils chown and chgrp causes the utilities to return an incorrect exit code during recursive operations. The final exit code is determined only by the last file processed. If the last operation succeeds, the command returns 0 even if earlier ownership or group changes failed due to permission errors. This can lead to security misconfigurations where administrative scripts incorrectly assume that owne

Why this priority

  • No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score5.5 (Medium)
Attack vectorLocal
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.1% (top 96%)
CISA exploited listNo
WeaknessCWE-253
Published2026-04-22
Last modified2026-10-26
Publisher (CNA): Canonical Ltd. · Vendor: uutils

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Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

uutils coreutils UPGRADE
Affected: < 0.6.0
Fixed in: 0.6.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy coreutils || rpm -q coreutils || coreutils --version
2. UPGRADE to 0.6.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade coreutils
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade coreutils
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
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-2026-35340?

coreutils: upgrade to 0.6.0. Exact commands for each OS are on this page.

Is CVE-2026-35340 being exploited?

CVE-2026-35340 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-2026-35340 affect?

CVE-2026-35340 affects coreutils. Severity is medium (CVSS 5.5). A flaw in the ChownExecutor used by uutils coreutils chown and chgrp causes the utilities to return an incorrect exit code during recursive operations. The final exit code is determined only by the last file processed. If the last operation

How urgent is CVE-2026-35340?

Priority 20/100. No elevated risk signals yet.

Related CVEs

References

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