Vulnerability identifier: #VU28380
Vulnerability risk: Low
CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-125
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a local privileged user to execute arbitrary code.
Linux kernel ext4 filesystem is vulnerable to an out-of-bound access in the ext4_ext_drop_refs() function when operating on a crafted ext4 filesystem image.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Linux kernel: 4.14 - 4.14.54, 4.17 - 4.17.5, 4.4 - 4.4.139
External links
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.55
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.17.6
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.140
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.