#VU94149 Input validation error in Linux kernel - CVE-2023-52433

Vulnerability identifier: #VU94149

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-2023-52433

CWE-ID: CWE-20

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 improper input validation within the __nft_rbtree_insert() function in net/netfilter/nft_set_rbtree.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.19, 4.19.1, 4.19.2, 4.19.3, 4.19.4, 4.19.5, 4.19.6, 4.19.7, 4.19.8, 4.19.9, 4.19.10, 4.19.11, 4.19.12, 4.19.13, 4.19.14, 4.19.15, 4.19.16, 4.19.17, 4.19.18, 4.19.19, 4.19.20, 4.19.21, 4.19.22, 4.19.23, 4.19.24, 4.19.25, 4.19.26, 4.19.27, 4.19.28, 4.19.29, 4.19.30, 4.19.31, 4.19.32, 4.19.33, 4.19.34, 4.19.35, 4.19.36, 4.19.37, 4.19.38, 4.19.39, 4.19.40, 4.19.41, 4.19.42, 4.19.43, 4.19.44, 4.19.45, 4.19.46, 4.19.47, 4.19.48, 4.19.49, 4.19.50, 4.19.51, 4.19.52, 4.19.53, 4.19.54, 4.19.55, 4.19.56, 4.19.57, 4.19.58, 4.19.59, 4.19.60, 4.19.61, 4.19.62, 4.19.63, 4.19.64, 4.19.65, 4.19.66, 4.19.67, 4.19.68, 4.19.69, 4.19.70, 4.19.71, 4.19.72, 4.19.73, 4.19.74, 4.19.75, 4.19.76, 4.19.77, 4.19.78, 4.19.79, 4.19.80, 4.19.81, 4.19.82, 4.19.83, 4.19.84, 4.19.85, 4.19.86, 4.19.87, 4.19.88, 4.19.89, 4.19.90, 4.19.91, 4.19.92, 4.19.93, 4.19.94, 4.19.95, 4.19.96, 4.19.97, 4.19.98, 4.19.99, 4.19.100, 4.19.101, 4.19.102, 4.19.103, 4.19.104, 4.19.105, 4.19.106, 4.19.107, 4.19.108, 4.19.109, 4.19.110, 4.19.111, 4.19.112, 4.19.113, 4.19.114, 4.19.115, 4.19.116, 4.19.117, 4.19.118, 4.19.118-2, 4.19.119, 4.19.120, 4.19.121, 4.19.122, 4.19.123, 4.19.124, 4.19.125, 4.19.126, 4.19.127, 4.19.128, 4.19.129, 4.19.130, 4.19.131, 4.19.132, 4.19.133, 4.19.134, 4.19.135, 4.19.136, 4.19.137, 4.19.138, 4.19.139, 4.19.140, 4.19.141, 4.19.142, 4.19.143, 4.19.144, 4.19.145, 4.19.146, 4.19.147, 4.19.148, 4.19.149, 4.19.150, 4.19.151, 4.19.152, 4.19.153, 4.19.154, 4.19.155, 4.19.156, 4.19.157, 4.19.158, 4.19.159, 4.19.160, 4.19.161, 4.19.162, 4.19.163, 4.19.164, 4.19.165, 4.19.166, 4.19.167, 4.19.168, 4.19.169, 4.19.170, 4.19.171, 4.19.172, 4.19.173, 4.19.174, 4.19.175, 4.19.176, 4.19.177, 4.19.178, 4.19.179, 4.19.180, 4.19.181, 4.19.182, 4.19.183, 4.19.184, 4.19.185, 4.19.186, 4.19.187, 4.19.188, 4.19.189, 4.19.190, 4.19.191, 4.19.192, 4.19.193, 4.19.194, 4.19.195, 4.19.196, 4.19.197, 4.19.198, 4.19.199, 4.19.200, 4.19.201, 4.19.202, 4.19.203, 4.19.204, 4.19.205, 4.19.206, 4.19.207, 4.19.208, 4.19.209, 4.19.210, 4.19.211, 4.19.212, 4.19.213, 4.19.214, 4.19.215, 4.19.216, 4.19.217, 4.19.218, 4.19.219, 4.19.220, 4.19.221, 4.19.222, 4.19.223, 4.19.224, 4.19.225, 4.19.226, 4.19.227, 4.19.228, 4.19.229, 4.19.230, 4.19.231, 4.19.232, 4.19.233, 4.19.234, 4.19.235, 4.19.236, 4.19.237, 4.19.238, 4.19.239, 4.19.240, 4.19.241, 4.19.242, 4.19.243, 4.19.244, 4.19.245, 4.19.246, 4.19.247, 4.19.248, 4.19.249, 4.19.250, 4.19.251, 4.19.252, 4.19.253, 4.19.254, 4.19.255, 4.19.256, 4.19.257, 4.19.258, 4.19.259, 4.19.260, 4.19.261, 4.19.262, 4.19.263, 4.19.264, 4.19.265, 4.19.266, 4.19.267, 4.19.268, 4.19.269, 4.19.270, 4.19.271, 4.19.272, 4.19.273, 4.19.274, 4.19.275, 4.19.276, 4.19.277, 4.19.278, 4.19.279, 4.19.280, 4.19.281, 4.19.282, 4.19.283, 4.19.284, 4.19.285, 4.19.286, 4.19.287, 4.19.288, 4.19.289, 4.19.290, 4.19.291, 4.19.292, 4.19.293, 4.19.294, 4.19.295, 4.19.296, 4.19.297, 4.19.298, 4.19.299, 4.19.300, 4.19.301, 4.19.302, 4.19.303, 4.19.304, 4.19.305, 4.19.306, 4.19.307, 4.19.308, 4.19.309, 4.19.310, 4.19.311, 4.19.312, 4.19.313, 4.19.314, 4.19.315

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External links
https://git.kernel.org/stable/c/e3213ff99a355cda811b41e8dbb3472d13167a3a
https://git.kernel.org/stable/c/2ee52ae94baabf7ee09cf2a8d854b990dac5d0e4
https://git.kernel.org/stable/c/03caf75da1059f0460666c826e9f50e13dfd0017
https://git.kernel.org/stable/c/c323ed65f66e5387ee0a73452118d49f1dae81b8
https://git.kernel.org/stable/c/9af7dfb3c9d7985172a240f85e684c5cd33e29ce
https://git.kernel.org/stable/c/9a8c544158f68f656d1734eb5ba00c4f817b76b1
https://git.kernel.org/stable/c/9db9feb841f7449772f9393c16b9ef4536d8c127
https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.316

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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.