SB2022061333 - Red Hat Enterprise Linux Advanced Virtualization 8.4 Extended Update Support update for the virt:av and virt-devel:av modules
Published: June 13, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Integer overflow (CVE-ID: CVE-2021-4206)
The vulnerability allows a local user to escalate privileges on the target system.
The vulnerability exists due to integer overflow in the cursor_alloc() function in the QXL display device emulation in QEMU. A privileged user can crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.
2) Race condition (CVE-ID: CVE-2021-4207)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition in the QXL display device emulation in QEMU. A privileged user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
3) Use-after-free (CVE-ID: CVE-2022-26353)
The vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in the virtio-net device of QEMU. A privileged user can exploit this issue to crash QEMU or potentially execute arbitrary code with elevated privileges.
4) Improper Resource Shutdown or Release (CVE-ID: CVE-2022-26354)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists in the vhost-vsock device of QEMU. A local user can trigger the error and gain access to sensitive information.
Remediation
Install update from vendor's website.