Local denial of service in Linux kernel netfilter



| Updated: 2025-05-14
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-52581
CWE-ID CWE-401
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Memory leak

EUVDB-ID: #VU89385

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-2023-52581

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a local user to perform DoS attack on the target system.

The vulnerability exists due memory leak within the nft_trans_gc_space() function in net/netfilter/nf_tables_api.c. A local user can force the system to leak memory and perform denial of service attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: 6.1 - 6.1.55

CPE2.3 External links

https://git.kernel.org/stable/c/4aea243b6853d06c1d160a9955b759189aa02b14
https://git.kernel.org/stable/c/cf5000a7787cbc10341091d37245a42c119d26c5
https://git.kernel.org/stable/c/a995a68e8a3b48533e47c856865d109a1f1a9d01
https://git.kernel.org/stable/c/09c85f2d21ab6b5acba31a037985b13e8e6565b8
https://git.kernel.org/stable/c/ef99506eaf1dc31feff1adfcfd68bc5535a22171
https://git.kernel.org/stable/c/7e5d732e6902eb6a37b35480796838a145ae5f07
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.56


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.



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