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Ubuntu 26.04 Tar Important File Overwrite Issue USN-8510-1 CVE-2025-45582

ubuntu
Calendar Grey July 6, 2026
Dist Ubuntu Esm H88
Critical update for Ubuntu regarding tar file overwrite issue. Details on severity and system patches included.
tar could be made to overwrite files.

Summary

tar could be made to overwrite files.

Software Description:

- tar: GNU tar archive utility

Details:

It was discovered that tar incorrectly handled symlinks when extracting

archives. An attacker could possibly use this issue to overwrite arbitrary

files.

Topics%20covered

Topics Covered

security advisory file overwrite Ubuntu important tar cve-2025-45582

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
  tar                             1.35+dfsg-4ubuntu0.2

Ubuntu 24.04 LTS
  tar                             1.35+dfsg-3ubuntu0.2

Ubuntu 22.04 LTS
  tar                             1.34+dfsg-1ubuntu0.1.22.04.4

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-8510-1

CVE-2025-45582

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8510-1

Topics%20covered

Topics Covered

security advisory file overwrite Ubuntu important tar cve-2025-45582

Package Information

https://launchpad.net/ubuntu/+source/tar/1.35+dfsg-4ubuntu0.2
https://launchpad.net/ubuntu/+source/tar/1.35+dfsg-3ubuntu0.2
https://launchpad.net/ubuntu/+source/tar/1.34+dfsg-1ubuntu0.1.22.04.4

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