#VU104565 NULL pointer dereference in Linux kernel - CVE-2022-49392
Vulnerability identifier: #VU104565
Vulnerability risk: Low
CVSSv4.0: 4.3 [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]
CVE-ID: CVE-2022-49392
CWE-ID:
CWE-476
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the aspeed_vuart_probe() function in drivers/tty/serial/8250/8250_aspeed_vuart.c. A local user can perform a denial of service (DoS) attack.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Linux kernel: 5.18, 5.18 rc1, 5.18 rc2, 5.18 rc3, 5.18 rc5, 5.18 rc6, 5.18 rc7, 5.18 rc8, 5.18.1, 5.18.2, 5.18.3
External links
https://git.kernel.org/stable/c/0e0fd55719fa081de6f9e5d9e6cef48efb04d34a
https://git.kernel.org/stable/c/90a6b6fc52bfdcfe9698454bf5bea26112abbcd1
https://git.kernel.org/stable/c/923d34ce069e8e51a4d003caa6b66a8cd6ecd0ed
https://git.kernel.org/stable/c/d5f1275f101e0e8a172d300d897f5a12e87e3485
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.4
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
