SB2022072810 - Denial of service in eXpress Data Path support in Xen
Published: July 28, 2022
Security Bulletin ID
SB2022072810
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Resource management error (CVE-ID: CVE-2022-33743)
CWE-ID: CWE-399 - Resource Management Errors
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a malicious network backend to perform a denial of service (DoS) attack.
The vulnerability exists due to an error in eXpress Data Path support implementation in Xen, allowing Linux netfront to use freed SKBs. A malicious network backend can cause denial of service on the guest OS.
Remediation
Install update from vendor's website.