Vulnerability identifier: #VU93054
Vulnerability risk: Low
CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/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 user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the kvm_arch_free_vm() and kvm_arch_init_vm() functions in arch/x86/kvm/x86.c, within the kvm_page_track_cleanup() function in arch/x86/kvm/mmu/page_track.c. A local user can perform a denial of service (DoS) attack.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Linux kernel:
External links
http://git.kernel.org/stable/c/deb2949417677649e2413266d7ce8c2ff73952b4
http://git.kernel.org/stable/c/4664318f73e496cd22c71b10888e75434a123e23
http://git.kernel.org/stable/c/eb7511bf9182292ef1df1082d23039e856d1ddfb
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.