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CVE-2009-4307

Status Candidate

Overview

The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 2.6.32-git6 allows user-assisted remote attackers to cause a denial of service (divide-by-zero error and panic) via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value).

Related Files

Debian Security Advisory 2443-1
Posted Mar 28, 2012
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2443-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or privilege escalation.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2009-4307, CVE-2011-1833, CVE-2011-4347, CVE-2012-0045, CVE-2012-1090, CVE-2012-1097
MD5 | 46acd3222ddefe1b1d906398bff5fbb8
Mandriva Linux Security Advisory 2011-029
Posted Feb 18, 2011
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2011-029 - Multiple vulnerabilities have been discovered and fixed in the Linux 2.6 kernel. The X.25 implementation does not properly parse facilities, which allows remote attackers to cause a denial of service (heap memory corruption and panic) or possibly have unspecified other impact via malformed data, a different vulnerability than CVE-2010-4164. The bcm_connect function Broadcast Manager in the Controller Area Network implementation in the Linux creates a publicly accessible file with a filename containing a kernel memory address, which allows local users to obtain potentially sensitive information about kernel memory use by listing this filename. The install_special_mapping function in mm/mmap.c does not make an expected security_file_mmap function call, which allows local users to bypass intended mmap_min_addr restrictions and possibly conduct NULL pointer dereference attacks via a crafted assembly-language application. Various other issues have also been addressed.

tags | advisory, remote, denial of service, kernel, local, vulnerability
systems | linux, mandriva
advisories | CVE-2010-3873, CVE-2010-4565, CVE-2010-4346, CVE-2010-4158, CVE-2010-3874, CVE-2010-4163, CVE-2010-4164, CVE-2009-4307, CVE-2010-4162, CVE-2010-3015, CVE-2010-4258, CVE-2010-3875, CVE-2010-3067, CVE-2010-4248, CVE-2010-3437, CVE-2010-3877, CVE-2009-2406, CVE-2010-3859, CVE-2010-4073, CVE-2010-4072, CVE-2010-3705, CVE-2010-4165, CVE-2010-3310, CVE-2010-3698
MD5 | b09673d46bd0c26aeac9afa523e5a306
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