#VU58841 Buffer overflow in Linux kernel - CVE-2020-14385
Vulnerability identifier: #VU58841
Vulnerability risk: Low
CVSSv4.0: 4.3 [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/E:U/U:Clear]
CVE-ID: CVE-2020-14385
CWE-ID:
CWE-119
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the file system metadata validator in XFS. A local user can cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt and shutdown the the filesystem.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Linux kernel: before 5.9, 5.9
External links
https://lists.opensuse.org/opensuse-security-announce/2020-10/msg00001.html
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14385
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f4020438fab05364018c91f7e02ebdd192085933
https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
https://usn.ubuntu.com/4576-1/
Q & A
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.
