AZL-89136
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-89136.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-89136
- Upstream
- Published
- 2026-05-26T02:16:40Z
- Modified
- 2026-08-30T05:26:50Z
- Summary
- CVE-2026-42497 affecting package perl for versions less than 5.38.2-510
- Details
-
Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the extraction directory.
makespecial_file() passes the tar header's linkname to link() without validating it against absolute paths or .. segments, creating a hardlink that shares the victim file's inode.
A subsequent write through the extracted name modifies the victim file, and the post-extraction chmod, chown, and utime block in extractfile() (guarded only against symlinks via -l) applies the tar header's mode, owner, and timestamps to the shared inode during extraction alone.
- References