#VU94415 Use-after-free in Linux kernel - CVE-2022-48838

Vulnerability identifier: #VU94415

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-2022-48838

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 usb_gadget_remove_driver(), udc_bind_to_driver() and dev_err() functions in drivers/usb/gadget/udc/core.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/4325124dde6726267813c736fee61226f1d38f0b
https://git.kernel.org/stable/c/e2d3a7009e505e120805f449c832942660f3f7f3
https://git.kernel.org/stable/c/609a7119bffe3ddd7c93f2fa65be8917e02a0b7e
https://git.kernel.org/stable/c/2282a6eb6d4e118e294e43dcc421e0e0fe4040b5
https://git.kernel.org/stable/c/00bdd9bf1ac6d401ad926d3d8df41b9f1399f646
https://git.kernel.org/stable/c/2015c23610cd0efadaeca4d3a8d1dae9a45aa35a
https://git.kernel.org/stable/c/27d64436984fb8835a8b7e95993193cc478b162e
https://git.kernel.org/stable/c/16b1941eac2bd499f065a6739a40ce0011a3d740

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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.