{"id":"AZL-89136","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.\n\n_make_special_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.\n\nA subsequent write through the extracted name modifies the victim file, and the post-extraction chmod, chown, and utime block in _extract_file() (guarded only against symlinks via -l) applies the tar header's mode, owner, and timestamps to the shared inode during extraction alone.","modified":"2026-08-30T05:26:50Z","published":"2026-05-26T02:16:40Z","upstream":["CVE-2026-42497"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42497"}],"affected":[{"package":{"name":"perl","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/perl"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.38.2-510"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-89136.json"}}],"schema_version":"1.9.0"}