Description
An integer underflow vulnerability exists in the OLE Document DIFAT Parser functionality of catdoc 0.95. A specially crafted malformed file can lead to heap-based memory corruption. An attacker can provide a malicious file to trigger this vulnerability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| catdoc | catdoc | 0.95 | — |
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | catdoc | 1:0.95-6 | — |
| Debian 13 | catdoc | 1:0.95-6 | — |
| Debian 12 | catdoc | 1:0.95-6~deb12u1 | DSA-5953-1 |
| Debian 11 | catdoc | 1:0.95-4.1+deb11u1 | DLA-4234-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | catdoc | No fix yet | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | catdoc | 1:0.95-5ubuntu0.24.04.1~esm1 | USN-8838-1 |
| Ubuntu Pro 22.04 LTS | catdoc | 1:0.95-5ubuntu0.22.04.1~esm1 | USN-8838-1 |
| Ubuntu Pro 20.04 LTS | catdoc | 1:0.95-4.1ubuntu0.20.04.1~esm1 | USN-8838-1 |
| Ubuntu Pro 18.04 LTS | catdoc | 1:0.95-4.1ubuntu0.18.04.1~esm1 | USN-8838-1 |
| Ubuntu Pro 16.04 LTS | catdoc | 1:0.94.3~git20160113.dbc9ec6+dfsg-1+deb9u1ubuntu0.1~esm1 | USN-8838-1 |
Advisories 3
- USN-8838-1 catdoc vulnerabilities Ubuntu Security Notices (USN) · Sep 28, 2026
- DSA-5953-1 catdoc - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-4234-1 catdoc - security update Debian Security (DSA / DLA) · Mar 9, 2026