Vulnerability identifier: #VU14179
Vulnerability risk: Low
CVSSv3.1: 5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-476
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a local attacker to cause DoS condition on the target system.
The vulnerability exists due to NULL pointer dereference in the __remove_dirty_segment() function, as defined in the source code file fs/f2fs/inode.c when mounting Flash-Friendly File System (F2FS) images. A local attacker can mount a specially crafted F2FS filesystem that submits malicious input and cause the affected software to terminate abnormally.
Mitigation
Update to version 4.17.11.
Vulnerable software versions
Linux kernel: 4.17 - 4.17.10, 4.16 - 4.16.18, 4.15 - 4.15.18
External links
http://bugzilla.kernel.org/show_bug.cgi?id=200419
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.