Description
The MP4_ReadBox_String function in modules/demux/mp4/libmp4.c in VideoLAN VLC media player before 2.1.6 performs an incorrect cast operation from a 64-bit integer to a 32-bit integer, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via a large box size.
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 | vlc | 2.2.0~rc2-2 | — |
| Debian 13 | vlc | 2.2.0~rc2-2 | — |
| Debian 12 | vlc | 2.2.0~rc2-2 | — |
| Debian 7 | vlc | 2.0.3-5+deb7u2 | DSA-3150-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | vlc | 2.1.6-0ubuntu14.04.1 | — |
Advisories 1
- DSA-3150-1 vlc - security update Debian Security (DSA / DLA) · Mar 9, 2026