Date: Mon, 22 Feb 2010 11:51:05 +0800 From: Eugene Teo <eugeneteo@...nel.sg> To: oss-security@...ts.openwall.com CC: "Steven M. Christey" <coley@...us.mitre.org> Subject: CVE request: kernel: ALSA: hda-intel: Avoid divide by zero crash hda-intel crashes the kernel due to a divide by zero in azx_position_ok. Using mp3blaster-3.2.5 (latest version) to play MP3 audio, the reporter was able to crash the kernel by stopping and restarting playback using the "5" key repeatedly. This happens as a normal user, not only as root. Kernel backtrace points to azx_position_ok() dividing by zero. Upstream commit: http://git.kernel.org/linus/fed08d036f2aabd8d0c684439de37f8ebec2bbc2 References: http://lkml.org/lkml/2010/2/6/40 http://nctritech.net/bugreport.txt http://lwn.net/Articles/375417/ https://bugzilla.redhat.com/show_bug.cgi?id=567168 Thanks, Eugene
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