Use-after-free in wayland - CVE-2021-3782
Published: September 15, 2022
Vulnerability identifier: #VU67416
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-3782
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: wayland.freedesktop.org
Affected software:
wayland
wayland
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error caused by incorrectly handled reference counting
certain objects. A local user can perform a denial of service (DoS) attack against the Wayland compositor or execute arbitrary code with elevated privileges.
How to mitigate CVE-2021-3782
Install updates from vendor's website.