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[USN-8510-1] tar vulnerability

Posted on 06 July 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8510-1
July 06, 2026

tar vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.04 LTS
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

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.

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

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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