#VU92898 Use-after-free in Linux kernel - CVE-2022-48754

Vulnerability identifier: #VU92898

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-2022-48754

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 phy_detach() function in drivers/net/phy/phy_device.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/67d271760b037ce0806d687ee6057edc8afd4205
https://git.kernel.org/stable/c/f39027cbada43b33566c312e6be3db654ca3ad17
https://git.kernel.org/stable/c/bd024e36f68174b1793906c39ca16cee0c9295c2
https://git.kernel.org/stable/c/aefaccd19379d6c4620269a162bfb88ff687f289
https://git.kernel.org/stable/c/cb2fab10fc5e7a3aa1bb0a68a3abdcf3e37852af
https://git.kernel.org/stable/c/cbda1b16687580d5beee38273f6241ae3725960c

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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.