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    CVE-2009-4307

    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).

    Published:Nov 23, 2009
    Last Modified:Apr 23, 2026
    EPS:Dec 13, 2009
    EPSS Score:0.03356
    CVSS Score:7.1

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Eus

    Exploits

    http://bugzilla.kernel.org/show_bug.cgi?id=14287http://bugzilla.kernel.org/show_bug.cgi?id=14287

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    CVE-2026-80921 (CVSS 8.8) — In the Linux kernel, the following vulnerability has been resolved: KVM: s390: vsie: zero stale crypto bits …
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    References

    http://bugzilla.kernel.org/show_bug.cgi?id=14287
    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=503358ae01b70ce6909d19dd01287093f6b6271c
    http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
    http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00005.html
    http://lkml.org/lkml/2009/12/9/255
    http://secunia.com/advisories/37658
    http://secunia.com/advisories/38017
    http://secunia.com/advisories/38276
    http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.32-git6.log
    http://www.mandriva.com/security/advisories?name=MDVSA-2011:029
    http://www.redhat.com/support/errata/RHSA-2010-0380.html
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9874
    http://bugzilla.kernel.org/show_bug.cgi?id=14287
    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=503358ae01b70ce6909d19dd01287093f6b6271c
    http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
    http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00005.html
    http://lkml.org/lkml/2009/12/9/255
    http://secunia.com/advisories/37658
    http://secunia.com/advisories/38017
    http://secunia.com/advisories/38276
    http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.32-git6.log
    http://www.mandriva.com/security/advisories?name=MDVSA-2011:029
    http://www.redhat.com/support/errata/RHSA-2010-0380.html
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9874

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High