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7.1
CVSSv2

CVE-2009-4307

Published: 13/12/2009 Updated: 07/11/2023
CVSS v2 Base Score: 7.1 | Impact Score: 6.9 | Exploitability Score: 8.6
VMScore: 632
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C
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Vulnerability Summary

The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel prior to 2.6.32-git6 allows user-assisted remote malicious users 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).

Vulnerability Trend

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Vendor Advisories

Debian Security Advisories: DSA-2443-1 linux-2.6 -- privilege escalation/denial of service
Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or privilege escalation The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2009-4307 Nageswara R Sastry reported an issue in the ext4 filesystem Local users with the privileges to mount a filesystem c ...
Red Hat: Moderate: kernel security, bug fix and enhancement update
Synopsis Moderate: kernel security, bug fix and enhancement update Type/Severity Security Advisory: Moderate Topic Updated kernel packages that fix multiple security issues, numerous bugsand add one enhancement are now available for Red Hat Enterprise Linux 6The Red Hat Security Response Team has rated thi ...
Red Hat: Important: Red Hat Enterprise Linux 5.5 kernel security and bug fix update
Synopsis Important: Red Hat Enterprise Linux 55 kernel security and bug fix update Type/Severity Security Advisory: Important Topic Updated kernel packages that fix three security issues, address severalhundred bugs, and add numerous enhancements are now available as part ofthe ongoing support and maintena ...
Red Hat: Low: kernel security and bug fix update
Synopsis Low: kernel security and bug fix update Type/Severity Security Advisory: Low Topic Updated kernel packages that fix one security issue and several bugs arenow available for Red Hat Enterprise Linux 5The Red Hat Security Response Team has rated this update as having lowsecurity impact A Common Vul ...
Red Hat: Important: kernel security and bug fix update
Synopsis Important: kernel security and bug fix update Type/Severity Security Advisory: Important Topic Updated kernel packages that fix multiple security issues and several bugsare now available for Red Hat Enterprise Linux 54 Extended Update SupportThe Red Hat Security Response Team has rated this updat ...

References

CWE-189http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.32-git6.loghttp://bugzilla.kernel.org/show_bug.cgi?id=14287http://secunia.com/advisories/37658http://lkml.org/lkml/2009/12/9/255http://secunia.com/advisories/38017http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.htmlhttp://secunia.com/advisories/38276http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00005.htmlhttp://www.redhat.com/support/errata/RHSA-2010-0380.htmlhttp://www.mandriva.com/security/advisories?name=MDVSA-2011:029https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9874http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=503358ae01b70ce6909d19dd01287093f6b6271chttps://nvd.nist.govhttps://www.debian.org/security/./dsa-2443
CVSSv3
CVSSv2
CVSSv3
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