SB2024051049 - Memory leak in Xen netback
Published: May 10, 2024
Security Bulletin ID
SB2024051049
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Memory leak (CVE-ID: CVE-2024-27393)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a malicious guest to perform DoS attack on the target system.
The vulnerability exists due memory leak within the xennet_alloc_one_rx_buffer() function in xen-netback implementation. A malicious guest userspace process can exhaust memory resources within the guest kernel and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.