Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-47061 |
CWE-ID | CWE-416 |
Exploitation vector | Local |
Public exploit | N/A |
Vulnerable software Subscribe |
Linux kernel Operating systems & Components / Operating system |
Vendor | Linux Foundation |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU90244
Risk: Low
CVSSv3.1: 7.7 [AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-47061
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the kvm_io_bus_unregister_dev() function in virt/kvm/kvm_main.c. A local user can escalate privileges on the system.
MitigationInstall update from vendor's website.
Vulnerable software versionsLinux kernel: All versions
External linkshttp://git.kernel.org/stable/c/03c6cccedd3913006744faa252a4da5145299343
http://git.kernel.org/stable/c/4e899ca848636b37e9ac124bc1723862a7d7d927
http://git.kernel.org/stable/c/30f46c6993731efb2a690c9197c0fd9ed425da2d
http://git.kernel.org/stable/c/2ee3757424be7c1cd1d0bbfa6db29a7edd82a250
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.