#VU99096 Buffer overflow in Linux kernel - CVE-2022-48948

Vulnerability identifier: #VU99096

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-2022-48948

CWE-ID: CWE-119

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 memory corruption within the uvc_function_ep0_complete() function in drivers/usb/gadget/function/f_uvc.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/4972e3528b968665b596b5434764ff8fd9446d35
https://git.kernel.org/stable/c/06fd17ee92c8f1704c7e54ec0fd50ae0542a49a5
https://git.kernel.org/stable/c/bc8380fe5768c564f921f7b4eaba932e330b9e4b
https://git.kernel.org/stable/c/b8fb1cba934ea122b50f13a4f9d6fc4fdc43d2be
https://git.kernel.org/stable/c/c79538f32df12887f110dcd6b9c825b482905f24
https://git.kernel.org/stable/c/6b41a35b41f77821db24f2d8f66794b390a585c5
https://git.kernel.org/stable/c/7b1f773277a72f9756d47a41b94e43506cce1954
https://git.kernel.org/stable/c/d1a92bb8d697f170d93fe922da763d7d156b8841
https://git.kernel.org/stable/c/4c92670b16727365699fe4b19ed32013bab2c107

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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.