Vulnerability identifier: #VU94412

Vulnerability risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-48857

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 nfc_digital_free_device() function in drivers/nfc/port100.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://git.kernel.org/stable/c/205c4ec78e71cbf561794e6043da80e7bae6790f
http://git.kernel.org/stable/c/32e866ae5a7af590597ef4bcff8451bf96d5f980
http://git.kernel.org/stable/c/b1db33d4e54bc35d8db96ce143ea0ef92e23d58e
http://git.kernel.org/stable/c/cd2a5c0da0d1ddf11d1f84e9c9b1949f50f6e161
http://git.kernel.org/stable/c/2b1c85f56512d49e43bc53741fce2f508cd90029
http://git.kernel.org/stable/c/0e721b8f2ee5e11376dd55363f9ccb539d754b8a
http://git.kernel.org/stable/c/7194737e1be8fdc89d2a9382bd2f371f7ee2eda8
http://git.kernel.org/stable/c/f80cfe2f26581f188429c12bd937eb905ad3ac7b

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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.