#VU87740 Use-after-free in Linux kernel - CVE-2023-52447

Vulnerability identifier: #VU87740

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-2023-52447

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 in bpf. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 6.1.75, 6.1.75

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External links
https://git.kernel.org/stable/c/62fca83303d608ad4fec3f7428c8685680bb01b0
https://git.kernel.org/stable/c/f91cd728b10c51f6d4a39957ccd56d1e802fc8ee
https://git.kernel.org/stable/c/bfd9b20c4862f41d4590fde11d70a5eeae53dcc5
https://git.kernel.org/stable/c/876673364161da50eed6b472d746ef88242b2368

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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.