Description
libpff through 20260926 contains an off-by-one bounds check in libpff_table_read_6c_record_entries that allows attackers to trigger a heap out-of-bounds read via crafted 6c table record entries. Attackers can supply crafted PST, OST or PAB files to applications like pffexport or pypff to read adjacent heap memory or cause crashes.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| libyal | libpff | ≤ 20260926 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | libpff | No fix yet | — |
| Ubuntu 26.04 LTS | libpff | No fix yet | — |
| Ubuntu 24.04 LTS | libpff | No fix yet | — |
| Ubuntu 22.04 LTS | libpff | No fix yet | — |
| Ubuntu 20.04 LTS | libpff | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | libpff | No fix yet | — |
| Ubuntu 16.04 LTS | libpff | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libpff | 20261030-1.1 | openSUSE-SU-2026:12498-1 |
Advisories 1
- openSUSE-SU-2026:12498-1 libpff-devel-20261030-1.1 on GA media SUSE / openSUSE Security Updates · Nov 10, 2026
References
- GitHub Issue #172 issue-tracking
- https://github.com/libyal/libpff product
- https://github.com/libyal/libpff/commit/cb83eb38ffdbdfe2c69238fe7ce481ddc8513266 patch
- https://github.com/libyal/libpff/blob/20260926/libpff/libpff_table.c#L5431-L5445 technical-description
- https://hackmd.io/@haindpwn/libpff-table-parsing-oob-reads third-party-advisory
- VulnCheck Advisory: libpff through 20260926 Heap Out-of-Bounds Read via libpff_table_read_6c_record_entries third-party-advisory