#VU90248 Use-after-free in Linux kernel - CVE-2023-52483

Vulnerability identifier: #VU90248

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-52483

CWE-ID: CWE-416

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 escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the mctp_route_lookup() function in net/mctp/route.c. A local user can escalate privileges on the system.

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/6c52b12159049046483fdb0c411a0a1869c41a67
https://git.kernel.org/stable/c/1db0724a01b558feb1ecae551782add1951a114a
https://git.kernel.org/stable/c/2405f64a95a7a094eb24cba9bcfaffd1ea264de4
https://git.kernel.org/stable/c/5093bbfc10ab6636b32728e35813cbd79feb063c

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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.