#VU96344 NULL pointer dereference in Linux kernel - CVE-2023-52900

Vulnerability identifier: #VU96344

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-2023-52900

CWE-ID: CWE-476

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 NULL pointer dereference within the __nilfs_btree_get_block() function in fs/nilfs2/btree.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.14, 4.14.0, 4.14.0 rc1, 4.14.1, 4.14.2, 4.14.3, 4.14.4, 4.14.5, 4.14.6, 4.14.7, 4.14.8, 4.14.9, 4.14.10, 4.14.11, 4.14.12, 4.14.13, 4.14.14, 4.14.15, 4.14.16, 4.14.17, 4.14.18, 4.14.19, 4.14.20, 4.14.21, 4.14.22, 4.14.23, 4.14.24, 4.14.25, 4.14.26, 4.14.27, 4.14.28, 4.14.29, 4.14.30, 4.14.31, 4.14.32, 4.14.33, 4.14.34, 4.14.35, 4.14.36, 4.14.37, 4.14.38, 4.14.39, 4.14.40, 4.14.41, 4.14.42, 4.14.43, 4.14.44, 4.14.45, 4.14.46, 4.14.47, 4.14.48, 4.14.49, 4.14.50, 4.14.51, 4.14.52, 4.14.53, 4.14.54, 4.14.55, 4.14.56, 4.14.57, 4.14.58, 4.14.59, 4.14.60, 4.14.61, 4.14.62, 4.14.63, 4.14.64, 4.14.65, 4.14.66, 4.14.67, 4.14.68, 4.14.69, 4.14.70, 4.14.71, 4.14.72, 4.14.73, 4.14.74, 4.14.75, 4.14.76, 4.14.77, 4.14.78, 4.14.79, 4.14.80, 4.14.81, 4.14.82, 4.14.83, 4.14.84, 4.14.85, 4.14.86, 4.14.87, 4.14.88, 4.14.89, 4.14.90, 4.14.91, 4.14.92, 4.14.93, 4.14.94, 4.14.95, 4.14.96, 4.14.97, 4.14.98, 4.14.99, 4.14.100, 4.14.101, 4.14.102, 4.14.103, 4.14.104, 4.14.105, 4.14.106, 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External links
https://git.kernel.org/stable/c/3c2a2ff67d46106715c2132021b98bd057c27545
https://git.kernel.org/stable/c/d9fde9eab1766170ff2ade67d09178d2cfd78749
https://git.kernel.org/stable/c/b0ba060d3287108eba17603bee3810e4cf2c272d
https://git.kernel.org/stable/c/712bd74eccb9d3626a0a236641962eca8e11a243
https://git.kernel.org/stable/c/45627a1a6450662e1e0f8174ef07b05710a20062
https://git.kernel.org/stable/c/0bf463939c09e5b2c35c71ed74a5fd60a74d6a04
https://git.kernel.org/stable/c/7633355e5c7f29c049a9048e461427d1d8ed3051
https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.304
https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.271
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.165
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.90
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.230
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.8
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2

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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.