CVE-2012-2100
7.1 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:N/A:C
6.2 Medium
AI Score
Confidence
High
0.029 Low
EPSS
Percentile
90.9%
The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 3.2.2, on the x86 platform and unspecified other platforms, allows user-assisted remote attackers to trigger inconsistent filesystem-groups data and possibly cause a denial of service via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value). NOTE: this vulnerability exists because of an incomplete fix for CVE-2009-4307.
Affected configurations
References
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d50f2ab6f050311dbf7b8f5501b25f0bf64a439b
rhn.redhat.com/errata/RHSA-2012-1445.html
rhn.redhat.com/errata/RHSA-2012-1580.html
www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2
www.openwall.com/lists/oss-security/2012/04/12/11
www.securityfocus.com/bid/53414
bugzilla.redhat.com/show_bug.cgi?id=809687
github.com/torvalds/linux/commit/d50f2ab6f050311dbf7b8f5501b25f0bf64a439b
Related
7.1 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:N/A:C
6.2 Medium
AI Score
Confidence
High
0.029 Low
EPSS
Percentile
90.9%