cve/2018/CVE-2018-1095.md

CVE-2018-1095

Description

The ext4_xattr_check_entries function in fs/ext4/xattr.c in the Linux kernel through 4.15.15 does not properly validate xattr sizes, which causes misinterpretation of a size as an error code, and consequently allows attackers to cause a denial of service (get_acl NULL pointer dereference and system crash) via a crafted ext4 image.

POC

Reference

• https://bugzilla.kernel.org/show_bug.cgi?id=199185
• https://bugzilla.kernel.org/show_bug.cgi?id=199185

Github

No PoCs found on GitHub currently.