|Date: (C)2009-02-27 (M)2017-10-04|
|CVSS Score: 4.9||Access Vector: LOCAL|
|Exploitability Subscore: 3.9||Access Complexity: LOW|
|Impact Subscore: 6.9||Authentication: NONE|
| ||Confidentiality: NONE|
| ||Integrity: NONE|
| ||Availability: COMPLETE|
The ext4_fill_super function in fs/ext4/super.c in the Linux kernel 2.6.27 before 22.214.171.124 and 2.6.28 before 126.96.36.199 does not validate the superblock configuration, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) by attempting to mount a crafted ext4 filesystem.