CVE-2026-110598
CVE-2026-110598 · Libyal libpff through 20260926 heap out-of-bounds read via libpff_record_entry_get_multi_value
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Libyal libpff through 20260926 contains an integer underflow in libpff_record_entry_get_multi_value() that allows attackers to trigger heap out-of-bounds reads via non-monotonic multi-value offsets. Attackers can craft PST, OST or PAB files with decreasing PT_MV_STRING8, PT_MV_UNICODE or PT_MV_BINARY offsets to crash libpff, pypff or pffexport and expose adjacent heap memory.
CVSS 6.9 · Medium · EPSS 0.2%
- Published
- Updated
Stack: system
Affected products and versions
libpff
- Versions
- ≥ 0, ≤ 20260926: Affected (custom)
No fix published
libpff Debian:12
- Versions
- 20180714-3
- 20180714-3.1
- 20180714-3.1~exp1
- 20231205-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
libpff Debian:13
- Versions
- 20180714-3.1
- 20231205-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
libpff Debian:14
- Versions
- 20180714-3.1
- 20231205-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
libpff Ubuntu:16.04:LTS
- Versions
- 20120802-5
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
libpff Ubuntu:18.04:LTS
- Versions
- 20120802-5
- 20120802-5.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
libpff Ubuntu:20.04:LTS
- Versions
- 20180714-1
- 20180714-2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
libpff Ubuntu:22.04:LTS
- Versions
- 20180714-3
- 20180714-3build1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
libpff Ubuntu:24.04:LTS
- Versions
- 20180714-3build2
- 20180714-3build3
- 20180714-3.1
- 20180714-3.1build1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
libpff Ubuntu:26.10
- Versions
- 20231205-1build1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
libpff Ubuntu:26.04:LTS
- Versions
- 20180714-3.1build2
- 20231205-1
- 20231205-1build1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
Original sources
- https://hackmd.io/@haind-pwn/libpff-multivalue-offset-underflow-oob-read
- https://github.com/libyal/libpff/blob/03545511ab7a7a609e50ec715bdd3985c3be71c5/libpff/libpff_record_entry.c#L2825-L2874
- https://github.com/libyal/libpff/blob/03545511ab7a7a609e50ec715bdd3985c3be71c5/libpff/libpff_multi_value.c#L207-L271
- https://www.vulncheck.com/advisories/libyal-libpff-through-20260926-heap-out-of-bounds-read-via-libpff-record-entry-get-multi-value
- https://nvd.nist.gov/vuln/detail/CVE-2026-110598