#VU105746 Input validation error in Linux kernel - CVE-2023-52927
Published: March 17, 2025 / Updated: August 1, 2025
Vulnerability identifier: #VU105746
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:P/U:Clear
CVE-ID: CVE-2023-52927
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
Public exploit is 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 improper input validation within the nft_ct_set_zone_eval() and nft_ct_tmpl_alloc_pcpu() functions in net/netfilter/nft_ct.c, within the EXPORT_SYMBOL_GPL() and nf_ct_find_expectation() functions in net/netfilter/nf_conntrack_expect.c, within the init_conntrack() function in net/netfilter/nf_conntrack_core.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.