#VU90657 NULL pointer dereference in Linux kernel - CVE-2023-52458

Vulnerability identifier: #VU90657

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-2023-52458

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 blkpg_do_ioctl() function in block/ioctl.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/5010c27120962c85d2f421d2cf211791c9603503
https://git.kernel.org/stable/c/ef31cc87794731ffcb578a195a2c47d744e25fb8
https://git.kernel.org/stable/c/cb16cc1abda18a9514106d2ac8c8d7abc0be5ed8
https://git.kernel.org/stable/c/bcdc288e7bc008daf38ef0401b53e4a8bb61bbe5
https://git.kernel.org/stable/c/6f64f866aa1ae6975c95d805ed51d7e9433a0016
https://git.kernel.org/stable/c/8f6dfa1f1efe6dcca2d43e575491d8fcbe922f62

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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.