Null pointer dereference in Linux kernel - CVE-2018-14613
Published: August 2, 2018
Vulnerability identifier: #VU14180
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-14613
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to cause DoS condition on the target system.
The vulnerability exists in the check_leaf_item() function, as defined in the source code file fs/btrfs/tree-checker.c, due to the affected software improperly validates block group items. A local attacker can mount and operate a specially crafted Btrfs filesystem that submits malicious input, trigger an invalid pointer dereference error in the io_ctl_map_page() function and cause the affected software to terminate abnormally.
Affected software
Linux kernel
Opensuse
Opensuse
How to mitigate CVE-2018-14613
Update to version 4.17.11.
Linux kernel - update to 4.17.11