========================================================================== Ubuntu Security Notice USN-8477-1 June 25, 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
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary:
tar could be made to overwrite files if it opened a specially crafted
archive.
Software Description:
- tar: GNU tar archive utility
Details:
It was discovered that tar incorrectly handled certain crafted archive files.
An attacker could possibly use this to inject hidden files with
attacker-controlled content, bypassing pre-extraction inspection mechanisms.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
tar 1.35+dfsg-4ubuntu0.1
Ubuntu 24.04 LTS
tar 1.35+dfsg-3ubuntu0.1
Ubuntu 22.04 LTS
tar 1.34+dfsg-1ubuntu0.1.22.04.3
Ubuntu 20.04 LTS
tar 1.30+dfsg-7ubuntu0.20.04.4+esm1
Available with Ubuntu Pro
Ubuntu 18.04 LTS
tar 1.29b-2ubuntu0.4+esm2
Available with Ubuntu Pro
Ubuntu 16.04 LTS
tar 1.28-2.1ubuntu0.2+esm4
Available with Ubuntu Pro
Ubuntu 14.04 LTS
tar 1.27.1-1ubuntu0.1+esm5
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8477-1
CVE-2026-5704
Package Information:
https://launchpad.net/ubuntu/+source/tar/1.35+dfsg-4ubuntu0.1
https://launchpad.net/ubuntu/+source/tar/1.35+dfsg-3ubuntu0.1
https://launchpad.net/ubuntu/+source/tar/1.34+dfsg-1ubuntu0.1.22.04.3
signature.asc
Description: OpenPGP digital signature
