Description
In ytnef 1.9.3, the TNEFSubjectHandler function in lib/ytnef.c allows remote attackers to cause a denial-of-service (and potentially code execution) due to a double free which can be triggered via a crafted file.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | ytnef | All versions | — |
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 | 1.9.3-3 | — |
| Debian 13 | libytnef | 1.9.3-3 | — |
| Debian 12 | libytnef | 1.9.3-3 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | libytnef | No fix yet | — |
| Ubuntu 26.04 LTS | libytnef | No fix yet | — |
| Ubuntu 25.10 | libytnef | No fix yet | — |
| Ubuntu 24.04 LTS | libytnef | No fix yet | — |
| Ubuntu 22.04 LTS | libytnef | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | libytnef | No fix yet | — |
| Ubuntu 18.04 LTS | libytnef | No fix yet | — |
| Ubuntu 16.04 LTS | libytnef | No fix yet | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | ytnef | 1.9.3-r1 | — |
| Alpine v3.23 | ytnef | 1.9.3-r1 | — |
| Alpine v3.22 | ytnef | 1.9.3-r1 | — |
| Alpine v3.21 | ytnef | 1.9.3-r1 | — |
| Alpine v3.20 | ytnef | 1.9.3-r1 | — |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | ytnef | 1.9.3-r1 | — |
| Alpine v3.18 | ytnef | 1.9.3-r1 | — |
| Alpine v3.17 | ytnef | 1.9.3-r1 | — |
| Alpine v3.16 | ytnef | 1.9.3-r1 | — |
| Alpine v3.15 | ytnef | 1.9.3-r1 | — |
| Alpine v3.14 | ytnef | 1.9.3-r1 | — |
| Alpine v3.13 | ytnef | 1.9.3-r1 | — |