CVE-2009-4307
N/A
Published: December 13, 2009 at 01:00 AM UTC
Updated: June 16, 2026 at 11:13 PM UTC
1 product affected across 1 vendorLinux Kernel
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Severity
N/A
Exploit prediction
EPSS 3%
Description
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).
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v ≤ 2.6.322.6.02.6.12.6.102.6.112.6.11.12.6.11.102.6.11.112.6.11.122.6.11.22.6.11.32.6.11.42.6.11.52.6.11.62.6.11.72.6.11.82.6.11.92.6.122.6.12.12.6.12.22.6.12.32.6.12.42.6.12.52.6.12.62.6.132.6.13.12.6.13.22.6.13.32.6.13.42.6.13.52.6.142.6.14.12.6.14.22.6.14.32.6.14.42.6.14.52.6.14.62.6.14.72.6.152.6.15.12.6.15.22.6.15.32.6.15.42.6.15.52.6.15.62.6.15.72.6.162.6.16.12.6.16.102.6.16.112.6.16.122.6.16.132.6.16.142.6.16.152.6.16.162.6.16.172.6.16.182.6.16.192.6.16.22.6.16.202.6.16.212.6.16.222.6.16.232.6.16.242.6.16.252.6.16.262.6.16.272.6.16.282.6.16.292.6.16.32.6.16.302.6.16.312.6.16.322.6.16.332.6.16.342.6.16.352.6.16.362.6.16.372.6.16.382.6.16.392.6.16.42.6.16.402.6.16.412.6.16.422.6.16.432.6.16.442.6.16.452.6.16.462.6.16.472.6.16.482.6.16.492.6.16.52.6.16.502.6.16.512.6.16.522.6.16.532.6.16.542.6.16.552.6.16.562.6.16.572.6.16.582.6.16.592.6.16.62.6.16.602.6.16.612.6.16.622.6.16.72.6.16.82.6.16.92.6.172.6.17.12.6.17.102.6.17.112.6.17.122.6.17.132.6.17.142.6.17.22.6.17.32.6.17.42.6.17.52.6.17.62.6.17.72.6.17.82.6.17.92.6.182.6.18.12.6.18.22.6.18.32.6.18.42.6.18.52.6.18.62.6.18.72.6.18.82.6.192.6.19.12.6.19.22.6.19.32.6.19.42.6.19.52.6.19.62.6.19.72.6.22.6.202.6.20.12.6.20.102.6.20.112.6.20.122.6.20.132.6.20.142.6.20.152.6.20.162.6.20.172.6.20.182.6.20.192.6.20.22.6.20.202.6.20.212.6.20.32.6.20.42.6.20.52.6.20.62.6.20.72.6.20.82.6.20.92.6.212.6.21.12.6.21.22.6.21.32.6.21.42.6.21.52.6.21.62.6.21.72.6.222.6.22.12.6.22.102.6.22.112.6.22.122.6.22.132.6.22.142.6.22.152.6.22.162.6.22.172.6.22.182.6.22.192.6.22.22.6.22.32.6.22.42.6.22.52.6.22.62.6.22.72.6.22.82.6.22.92.6.232.6.23.12.6.23.102.6.23.112.6.23.122.6.23.132.6.23.142.6.23.152.6.23.162.6.23.172.6.23.22.6.23.32.6.23.42.6.23.52.6.23.62.6.23.72.6.23.82.6.23.92.6.242.6.24.12.6.24.22.6.24.32.6.24.42.6.24.52.6.24.62.6.24.72.6.252.6.25.12.6.25.102.6.25.112.6.25.122.6.25.132.6.25.142.6.25.152.6.25.162.6.25.172.6.25.182.6.25.192.6.25.22.6.25.202.6.25.32.6.25.42.6.25.52.6.25.62.6.25.72.6.25.82.6.25.92.6.262.6.26.12.6.26.22.6.26.32.6.26.42.6.26.52.6.26.62.6.26.72.6.26.82.6.272.6.27.12.6.27.102.6.27.112.6.27.122.6.27.132.6.27.142.6.27.152.6.27.162.6.27.172.6.27.182.6.27.192.6.27.22.6.27.202.6.27.212.6.27.222.6.27.232.6.27.242.6.27.252.6.27.262.6.27.272.6.27.282.6.27.292.6.27.32.6.27.302.6.27.312.6.27.42.6.27.52.6.27.62.6.27.72.6.27.82.6.27.92.6.282.6.28.12.6.28.102.6.28.22.6.28.32.6.28.42.6.28.52.6.28.62.6.28.72.6.28.82.6.28.92.6.292.6.29.12.6.29.22.6.29.32.6.29.42.6.29.52.6.29.62.6.32.6.302.6.30 rc7-git62.6.30.12.6.30.22.6.30.32.6.30.42.6.30.52.6.30.62.6.30.72.6.30.82.6.30.92.6.312.6.31 rc12.6.31 rc22.6.31 rc32.6.31 rc42.6.31 rc52.6.31 rc62.6.31 rc72.6.31 rc82.6.31.12.6.31.22.6.31.32.6.31.42.6.31.52.6.31.62.6.42.6.52.6.62.6.72.6.82.6.8.12.6.9
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- http://bugzilla.kernel.org/show_bug.cgi?id=14287
- http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00005.html
- http://secunia.com/advisories/37658
- http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.32-git6.log
References (12)
x_refsource_CONFIRMExploitPatch
Source: [email protected]
http://bugzilla.kernel.org/show_bug.cgi?id=14287Vendor Advisoryx_refsource_SUSE
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.htmlVendor Advisoryx_refsource_SUSE
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00005.htmlThird Party Advisoryx_refsource_SECUNIAVendor Advisory
Source: [email protected]
http://secunia.com/advisories/37658Quick Info
StatusMODIFIED
CWE
CWE-189
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