Description
The opus_packet_get_samples_per_frame function in client in Mumble 1.2.4 and the 1.2.3 pre-release snapshots allows remote attackers to cause a denial of service (crash) via a crafted length prefix value, which triggers a NULL pointer dereference or a heap-based buffer over-read (aka "out-of-bounds array access").
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 | mumble | 1.2.4-0.2 | — |
| Debian 13 | mumble | 1.2.4-0.2 | — |
| Debian 12 | mumble | 1.2.4-0.2 | — |
| Debian 7 | mumble | 1.2.3-349-g315b5f5-2.2+deb7u1 | DSA-2854-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | mumble | 1.2.17-1.2 | openSUSE-SU-2024:10080-1 |
Advisories 2
- DSA-2854-1 mumble - several Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10080-1 mumble-1.2.17-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- DSA-2854 vendor-advisory
- openSUSE-SU-2014:0271 vendor-advisory
- 102904 vdb-entry
- http://mumble.info/security/Mumble-SA-2014-001.txt