Description
An issue was discovered in ytnef before 1.9.2. There is a potential out-of-bounds access with fields of Size 0 in TNEFParse() in libytnef.
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 | libytnef | 1.9.2-1 | — |
| Debian 13 | libytnef | 1.9.2-1 | — |
| Debian 12 | libytnef | 1.9.2-1 | — |
| Debian 8 | libytnef | 1.5-6+deb8u1 | DSA-3846-1 |
| Debian 7 | libytnef | 1.5-4+deb7u1 | DLA-878-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | libytnef | 1.5-9ubuntu0.1 | USN-4615-1 |
| Ubuntu 14.04 LTS | libytnef | 1.5-6ubuntu0.1 | USN-3288-1 |
Advisories 4
- USN-4615-1 libytnef vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3288-1 libytnef vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-878-1 libytnef - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3846-1 libytnef - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://github.com/Yeraze/ytnef/commit/3cb0f914d6427073f262e1b2b5fd973e3043cdf7
- DSA-3846 vendor-advisory
- FEDORA-2019-7d7083b8be vendor-advisory