Out-of-bounds write in Linux kernel - CVE-2018-10878
Published: August 24, 2018 / Updated: August 27, 2018
Vulnerability identifier: #VU14535
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-10878
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local attacker to gain elevated privileges on the target system.
The vulnerability exists due to out-of-bounds write error in the ext4_init_block_bitmap() function in the fourth extended filesystem (ext4). A local attacker can mount and operate a specially crafted ext4 filesystem image, trigger memory corruption and cause the service to crash or execute arbitrary code with elevated privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2018-10878
Update to version 4.18 or later.