NULL pointer dereference in Linux kernel - CVE-2022-49932
Published: May 4, 2025 / Updated: May 10, 2025
Vulnerability identifier: #VU108467
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2022-49932
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the vmx_cleanup_l1d_flush() and vmx_init() functions in arch/x86/kvm/vmx/vmx.c. A local user can perform a denial of service (DoS) attack.
Affected software
Linux kernel
How to mitigate CVE-2022-49932
Install update from vendor's website.
Linux kernel - addressed in versions 6.1.20, 6.2.7, 6.3
External References
- https://git.kernel.org/stable/c/e136e969d268b9b89329c816c002e53f60e82985
- https://git.kernel.org/stable/c/e28533c08023c4b319b7f2cd77f3f7c9204eb517
- https://git.kernel.org/stable/c/e32b120071ea114efc0b4ddd439547750b85f618
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.20
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3