AZL-89307
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-89307.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-89307
- Upstream
- Published
- 2026-05-27T04:16:31Z
- Modified
- 2026-08-30T05:26:50Z
- Summary
- CVE-2026-48959 affecting package perl for versions less than 5.38.2-512
- Details
-
IO::Uncompress::Unzip versions before 2.220 for Perl allow CPU exhaustion via per-byte read loop in fastForward.
fastForward() compares length $offset (the digit count of the offset, 1 to 19) against the chunk size $c instead of $offset itself, so $c shrinks from 16 KiB to 1-19 bytes per iteration.
Extracting a named entry from an attacker supplied zip via IO::Uncompress::Unzip->new($zip, Name => $target) drives a per-byte read loop scaling with the entry's compressed size, up to the non-Zip64 4 GiB cap.
- References