CVE-2009-4020

Severity: high (CVSS 7.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-12-04 · updated 2026-06-16
Weakness: CWE-119

Description

Stack-based buffer overflow in the hfs subsystem in the Linux kernel 2.6.32 allows remote attackers to have an unspecified impact via a crafted Hierarchical File System (HFS) filesystem, related to the hfs_readdir function in fs/hfs/dir.c.

Affected products

Linux kernel: 2.6.32

References

http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00007.html
http://marc.info/?l=linux-mm-commits&m=125987755823047&w=2
http://secunia.com/advisories/38276
http://secunia.com/advisories/39742
http://support.avaya.com/css/P8/documents/100073666
http://userweb.kernel.org/~akpm/mmotm/broken-out/hfs-fix-a-potential-buffer-overflow.patch
http://www.debian.org/security/2010/dsa-2005
http://www.novell.com/linux/security/advisories/2010_23_kernel.html
http://www.openwall.com/lists/oss-security/2009/12/04/1
https://bugzilla.redhat.com/show_bug.cgi?id=540736
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10091

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