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CVE-2007-4571

Status Candidate

Overview

The snd_mem_proc_read function in sound/core/memalloc.c in the Advanced Linux Sound Architecture (ALSA) in the Linux kernel before 2.6.22.8 does not return the correct write size, which allows local users to obtain sensitive information (kernel memory contents) via a small count argument, as demonstrated by multiple reads of /proc/driver/snd-page-alloc.

Related Files

Ubuntu Security Notice 618-1
Posted Jun 20, 2008
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 618-1 - Memory access issues, buffer overflows, denial of service, race conditions.. all sorts of fun and mayhem has been addressed in the Linux 2.6 kernel branch on Ubuntu.

tags | advisory, denial of service, overflow, kernel
systems | linux, ubuntu
advisories | CVE-2007-4571, CVE-2007-5904, CVE-2007-6694, CVE-2008-0007, CVE-2008-1294, CVE-2008-1375, CVE-2008-1669
SHA-256 | 0acf6967795b6e572efa6fa96bc8daa4c48aa9762c583cd6ee70d852449a6d06
dsa-1505.txt
Posted Feb 23, 2008
Site debian.org

Debian Security Advisory 1505 - Takashi Iwai supplied a fix for a memory leak in the snd_page_alloc module. Local users could exploit this issue to obtain sensitive information from the kernel.

tags | advisory, kernel, local, memory leak
systems | linux, debian
advisories | CVE-2007-4571
SHA-256 | f272b5ba166578eb27322aa5d703ba9bc6a9c384b5a9d38408dbf77b77a47744
Debian Linux Security Advisory 1479-1
Posted Jan 30, 2008
Authored by Debian | Site debian.org

Debian Security Advisory 1479-1 - Several local vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or the execution of arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local, vulnerability
systems | linux, debian
advisories | CVE-2007-2878, CVE-2007-4571, CVE-2007-6151, CVE-2008-0001
SHA-256 | 17d4d9a0f7ff8fa49e82e020f7eb075a2b6fdfd0fa9b97ccec62ce258d078174
iDEFENSE Security Advisory 2007-09-25.1
Posted Sep 26, 2007
Authored by iDefense Labs, mu-b | Site idefense.com

iDefense Security Advisory 09.25.07 - Local exploitation of an information disclosure vulnerability within the ALSA driver included in the Linux Kernel allows attackers to obtain sensitive information from kernel memory. iDefense has confirmed the existence of this vulnerability in version 2.6.22.1 of the Linux Kernel as installed with Fedora CORE 7. It is suspected that other versions are also vulnerable.

tags | advisory, kernel, local, info disclosure
systems | linux, fedora
advisories | CVE-2007-4571
SHA-256 | 949399f1ef56b7cf5b001af2d386dd168ad4fea165fb77e0c740cb6214ea3165
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