SB2026042919 - Ubuntu update for rustc
Published: April 29, 2026
Security Bulletin ID
SB2026042919
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) UNIX symbolic link following (CVE-ID: CVE-2026-33056)
The vulnerability allows a remote attacker to modify permissions of arbitrary directories outside the extraction root.
The vulnerability exists due to symlink following in unpack_dir when unpacking a crafted tar archive. A remote attacker can supply a tarball containing a symlink entry followed by a directory entry with the same name to modify permissions of arbitrary directories outside the extraction root.
Remediation
Install update from vendor's website.