#VU90458 NULL pointer dereference in Linux kernel - CVE-2023-52860

Vulnerability identifier: #VU90458

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-2023-52860

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 hns3_pmu_init_pmu() and hns3_pmu_uninit_pmu() functions in drivers/perf/hisilicon/hns3_pmu.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/4589403a343bb0c72a6faf5898386ff964d4e01a
https://git.kernel.org/stable/c/3f5827371763f2d9c70719c270055a81d030f3d0
https://git.kernel.org/stable/c/d04ff5437a45f275db5530efb49b68d0ec851f6f
https://git.kernel.org/stable/c/50b560783f7f71790bcf70e9e9855155fb0af8c1

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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.