#VU28159 Improper Handling of Exceptional Conditions in Linux kernel - CVE-2020-12888
Vulnerability identifier: #VU28159
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-2020-12888
CWE-ID: N/A
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 deinal of service (DoS) attack.
The vulnerability exists due to the VFIO PCI driver mishandles attempts to access disabled memory space. A local user can cause a denial of service condition on the target system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Linux kernel: 5.6 - 5.6.13
External links
https://www.openwall.com/lists/oss-security/2020/05/19/6
https://lore.kernel.org/kvm/158871401328.15589.17598154478222071285.stgit@gimli.home/
https://lore.kernel.org/kvm/158871570274.15589.10563806532874116326.stgit@gimli.home/
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.
