Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2019-14821 |
CWE-ID | CWE-787 |
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: #VU21255
Risk: Low
CVSSv3.1: 7.7 [CVSS:3.1/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-2019-14821
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in the KVM coalesced MMIO support functionality due to incorrect processing of shared indexes. A local user can run a specially crafted application to trigger an out-of-bounds write error and write data to arbitrary address in the kernel memory.
Successful vulnerability exploitation may allow an attacker to execute arbitrary code on the system with root privileges.
MitigationInstall updates from vendor's repository.
Linux kernel: 4.4.0 - 5.3.13
External linkshttp://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.1
http://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.17
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.194
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.194
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.75
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.146
http://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4
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.