#VU69296 Out-of-bounds write in Linux kernel - CVE-2022-43750

Vulnerability identifier: #VU69296

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-2022-43750

CWE-ID: CWE-787

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 boundary error within the drivers/usb/mon/mon_bin.c in usbmon in the Linux kernel. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 5.19.15, 6.0.1, 5.19.15, 5.19.15

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External links
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.1
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a659daf63d16aa883be42f3f34ff84235c302198
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.15
https://github.com/torvalds/linux/commit/a659daf63d16aa883be42f3f34ff84235c302198
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html

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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.