#VU99103 Information disclosure in Linux kernel - CVE-2022-48955

Vulnerability identifier: #VU99103

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-48955

CWE-ID: CWE-200

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 gain access to sensitive information.

The vulnerability exists due to information disclosure within the tbnet_open() function in drivers/net/thunderbolt.c. A local user can gain access to sensitive information.

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/b9274dbe399952a8175db2e1ee148b7c9ba2b538
https://git.kernel.org/stable/c/ed6e955f3b7e0e622c080f4bcb5427a5e1af4c2a
https://git.kernel.org/stable/c/ed14e5903638f6eb868e3e2b4e610985e6a6c876

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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.