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.
Advisories
Source ID Title
EUVD EUVD EUVD-2012-2104 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.
Ubuntu USN Ubuntu USN USN-1384-1 Linux kernel (Oneiric backport) vulnerabilities
Ubuntu USN Ubuntu USN USN-1388-1 Linux kernel (EC2) vulnerabilities
Ubuntu USN Ubuntu USN USN-1389-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-1404-1 Linux kernel (OMAP4) vulnerability
Ubuntu USN Ubuntu USN USN-1405-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-1432-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-1440-1 Linux kernel (Natty backport) vulnerabilities
Ubuntu USN Ubuntu USN USN-1458-1 Linux kernel (OMAP4) vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

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History

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Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-06T19:26:07.782Z

Reserved: 2012-04-04T00:00:00

Link: CVE-2012-2100

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2012-07-03T16:40:32.067

Modified: 2025-04-11T00:51:21.963

Link: CVE-2012-2100

cve-icon Redhat

Severity : Low

Publid Date: 2012-01-10T00:00:00Z

Links: CVE-2012-2100 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses