Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2022-33744 |
CWE-ID | CWE-399 |
Exploitation vector | Local |
Public exploit | N/A |
Vulnerable software Subscribe |
Xen Server applications / Virtualization software |
Vendor | Xen Project |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU65844
Risk: Low
CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-33744
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe vulnerability allows an attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of foreign mappings performed by rbtree when mapping pages of Arm guests. An unprivileged Arm guest can cause inconsistencies of the rbtree via PV devices, which can lead to denial of service of dom0 and cause crashes or the inability to perform further mappings of other guests' memory pages.
MitigationInstall updates from vendor's website.
Vulnerable software versionsXen: All versions
External linkshttp://xenbits.xenproject.org/xsa/advisory-406.txt
http://xenbits.xen.org/xsa/advisory-406.html
http://www.openwall.com/lists/oss-security/2022/07/05/4
http://www.debian.org/security/2022/dsa-5191
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.