Description
A vulnerability has been found in mruby up to 3.4.0. This vulnerability affects the function sort_cmp of the file src/array.c. Such manipulation leads to use after free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The name of the patch is eb398971bfb43c38db3e04528b68ac9a7ce509bc. It is advisable to implement a patch to correct this issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | mruby | 3.0, 3.1, 3.2, 3.3, 3.4.0 | — |
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 | mruby | 4.0.0-1 | — |
| Debian 13 | mruby | No fix yet | — |
| Debian 12 | mruby | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | mruby | No fix yet | — |
| Ubuntu 26.04 LTS | mruby | No fix yet | — |
| Ubuntu 25.10 | mruby | No fix yet | — |
| Ubuntu 24.04 LTS | mruby | No fix yet | — |
| Ubuntu 22.04 LTS | mruby | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | mruby | No fix yet | — |
| Ubuntu 18.04 LTS | mruby | No fix yet | — |
| Ubuntu 16.04 LTS | mruby | No fix yet | — |
References
- VDB-332325 | mruby array.c sort_cmp use after free vdb-entry technical-description
- VDB-332325 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- Submit #683435 | mruby 3.4.0 Use After Free third-party-advisory
- https://github.com/mruby/mruby/issues/6649 issue-tracking
- https://github.com/makesoftwaresafe/mruby/pull/263 issue-tracking
- https://github.com/mruby/mruby/issues/6649#issue-3534393003 exploit issue-tracking
- https://github.com/mruby/mruby/commit/eb398971bfb43c38db3e04528b68ac9a7ce509bc patch
- https://github.com/mruby/mruby/ product