Description
libphdi through 20260902 contains a heap out-of-bounds read vulnerability in libphdi_data_files_get_extent_data_file_path that uses the directory prefix length instead of the basename length. Attackers can supply a crafted Parallels disk image descriptor with a long directory prefix and short basename to crash the process or expose adjacent heap memory.
Metrics
CVSS 3.1 6.1/10
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| libyal | libphdi | <= 20260902 |
References
- https://github.com/libyal/libphdi
- https://github.com/libyal/libphdi/blob/20260902/libphdi/libphdi_data_files.c#L890-L907
- https://github.com/libyal/libphdi/commit/61e3e1f6b4c5e15ce827b11858ba51f0dba254e3
- https://github.com/libyal/libphdi/issues/6
- https://hackmd.io/@haindpwn/libphdi-extent-data-file-path-heap-oob-read
- https://www.vulncheck.com/advisories/libphdi-through-20260902-heap-out-of-bounds-read-via-extent-data-file-path
- https://hackmd.io/@haindpwn/cve-2026-116737-libphdi-extent-data-file-path-heap-oob-read
Timeline
- Published
- Oct 26, 2026
- Last modified
- Nov 2, 2026
- NVD status
- Deferred