#VU70508 Use-after-free in Linux kernel - CVE-2022-47946 

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Main Vulnerability Database Vulnerabilities #VU70508

#VU70508 Use-after-free in Linux kernel - CVE-2022-47946

Published: December 27, 2022


Vulnerability identifier: #VU70508
Vulnerability risk: Low
CVSSv4.0: 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-2022-47946
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Linux kernel
Software vendor:
Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error within the io_sqpoll_wait_sq() function in fs/io_uring.c. A remote attacker can crash the kernel by forking a process and then quickly terminating it.


Remediation

Install update from vendor's website.

External links