SB2023050524 - Ubuntu update for linux-oem-6.1
Published: May 5, 2023
Security Bulletin ID
SB2023050524
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2023-1859)
The vulnerability allows a malicious guest to gain access to sensitive information or perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within the xen_9pfs_front_removet() function in net/9p/trans_xen.c in Xen transport for 9pfs. A malicious guest VM can trigger a use-after-free error and gain access to sensitive information of the hypervisor or crash it.
Remediation
Install update from vendor's website.