#VU80177 Use-after-free in Linux kernel - CVE-2023-4563
Published: August 31, 2023
Vulnerability identifier: #VU80177
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-2023-4563
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
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 nft_verdict_dump() function of the nftables sub-component. A local user can trigger a race condition between set GC and transaction and perform a DoS attack.
Remediation
Install updates from vendor's website.