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4.9
CVSSv2

CVE-2009-4021

Published: 25/11/2009 Updated: 13/02/2023
CVSS v2 Base Score: 4.9 | Impact Score: 6.9 | Exploitability Score: 3.9
VMScore: 437
Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C
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Vulnerability Summary

The fuse_direct_io function in fs/fuse/file.c in the fuse subsystem in the Linux kernel prior to 2.6.32-rc7 might allow malicious users to cause a denial of service (invalid pointer dereference and OOPS) via vectors possibly related to a memory-consumption attack.

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Vendor Advisories

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 5This update has been rated as having important security impact by the RedHat Secu ...
Ubuntu Security Notice: linux, linux-source-2.6.15 vulnerabilities
Amerigo Wang and Eric Sesterhenn discovered that the HFS and ext4 filesystems did not correctly check certain disk structures If a user were tricked into mounting a specially crafted filesystem, a remote attacker could crash the system or gain root privileges (CVE-2009-4020, CVE-2009-4308) ...
Debian Security Advisories: DSA-2003-1 linux-2.6 -- privilege escalation/denial of service
NOTE: This kernel update marks the final planned kernel security update for the 2618 kernel in the Debian release 'etch' Although security support for 'etch' officially ended on Feburary 15th, 2010, this update was already in preparation before that date A final update that includes fixes for these issues in the 2624 kernel is also in prepara ...
Debian Security Advisories: DSA-2005-1 linux-2.6.24 -- privilege escalation/denial of service/sensitive memory leak
NOTE: This kernel update marks the final planned kernel security update for the 2624 kernel in the Debian release 'etch' Although security support for 'etch' officially ended on Feburary 15th, 2010, this update was already in preparation before that date Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial ...

References

CWE-399https://bugzilla.redhat.com/show_bug.cgi?id=538734http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc7http://www.securityfocus.com/bid/37069http://www.openwall.com/lists/oss-security/2009/11/24/5http://www.openwall.com/lists/oss-security/2009/11/19/1http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00002.htmlhttp://lists.opensuse.org/opensuse-security-announce/2009-12/msg00005.htmlhttp://secunia.com/advisories/37909http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.htmlhttp://secunia.com/advisories/38017http://www.redhat.com/support/errata/RHSA-2010-0041.htmlhttps://rhn.redhat.com/errata/RHSA-2010-0046.htmlhttps://rhn.redhat.com/errata/RHSA-2010-0095.htmlhttp://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.htmlhttp://support.avaya.com/css/P8/documents/100073666http://www.debian.org/security/2010/dsa-2005https://exchange.xforce.ibmcloud.com/vulnerabilities/54358https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6955https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10516http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f60311d5f7670d9539b424e4ed8b5c0872fc9e83https://access.redhat.com/errata/RHSA-2010:0046https://usn.ubuntu.com/894-1/https://nvd.nist.gov
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