VULNERABILITY INTELLIGENCE

CVE-2009-4307

CVSS score7.1 HIGH
EPSS probability3.43%
CISA KEVNot currently listed
Published2009-12-13
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:N/I:N/A:C

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).

Primary references