Description
Integer underflow in the real_get_rdt_chunk function in real.c, as used in modules/access/rtsp/real.c in VideoLAN VLC media player before 1.0.1 and stream/realrtsp/real.c in MPlayer before r29447, allows remote attackers to execute arbitrary code via a crafted length value in an RDT chunk header.
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 | mplayer | 2:1.0~rc3+svn20100502-3 | — |
| Debian 14 | vlc | 1.0.1-1 | — |
| Debian 13 | mplayer | 2:1.0~rc3+svn20100502-3 | — |
| Debian 13 | vlc | 1.0.1-1 | — |
| Debian 12 | mplayer | 2:1.0~rc3+svn20100502-3 | — |
| Debian 12 | vlc | 1.0.1-1 | — |
| Debian 5.0 | mplayer | 1.0~rc2-17+lenny3.2 | DSA-2044-1 |
| Debian 5.0 | vlc | 0.8.6.h-4+lenny2.3 | DSA-2043-1 |
Advisories 2
- DSA-2044-1 mplayer - arbitrary code execution Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2043-1 vlc - arbitrary code execution Debian Security (DSA / DLA) · Mar 9, 2026
References
- 20090727 [DZC-2009-001] The Movie Player and VLC Media Player Real Data Transport parsing integer underflow. mailing-list
- https://dzcore.wordpress.com/2009/07/27/dzc-2009-001-the-movie-player-and-vlc-media-player-real-data-transport-parsing-integer-underflow/
- http://git.videolan.org/?p=vlc.git%3Ba=commit%3Bh=dc74600c97eb834c08674676e209afa842053aca
- [oss-security] 20100604 Re: CVE requests for mplayer/vlc and abcm2ps mailing-list