UBUNTU-CVE-2018-1095
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.
02 / AFFECTED SOFTWARE
Affected packages
16 explicit affected versions
15 explicit affected versions
34 explicit affected versions
12 explicit affected versions
7 explicit affected versions
7 explicit affected versions
6 explicit affected versions
7 explicit affected versions
4 explicit affected versions
8 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES