#VU90172 Use-after-free in Linux kernel - CVE-2022-48697

Vulnerability identifier: #VU90172

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-2022-48697

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 __nvmet_req_complete() function in drivers/nvme/target/core.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/17f121ca3ec6be0fb32d77c7f65362934a38cc8e
https://git.kernel.org/stable/c/8d66989b5f7bb28bba2f8e1e2ffc8bfef4a10717
https://git.kernel.org/stable/c/be01f1c988757b95f11f090a9f491365670a522b
https://git.kernel.org/stable/c/ebf46da50beb78066674354ad650606a467e33fa
https://git.kernel.org/stable/c/4484ce97a78171668c402e0c45db7f760aea8060
https://git.kernel.org/stable/c/6a02a61e81c231cc5c680c5dbf8665275147ac52

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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.