Description
The DecodeNumber function in unrarlib.c in unrar 0.0.1 (aka unrar-free or unrar-gpl) suffers from a NULL pointer dereference flaw triggered by a crafted RAR archive. NOTE: this may be the same as one of the several test cases in the CVE-2017-11189 references.
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 | unrar-free | 1:0.0.1+cvs20140707-4 | — |
| Debian 13 | unrar-free | 1:0.0.1+cvs20140707-4 | — |
| Debian 12 | unrar-free | 1:0.0.1+cvs20140707-4 | — |
| Debian 9 | unrar-free | 1:0.0.1+cvs20140707-1+deb9u1 | DLA-2567-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | unrar-free | 1:0.0.1+cvs20140707-4~build0.16.04.1 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | unrar-free | 1:0.0.1+cvs20071127-2+deb7u1ubuntu0.1~esm1 | — |
Advisories 1
- DLA-2567-1 unrar-free - security update Debian Security (DSA / DLA) · Mar 9, 2026