#VU104665 Improper locking in Linux kernel - CVE-2022-49398

Vulnerability identifier: #VU104665

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-49398

CWE-ID: CWE-667

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 perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the dwc3_gadget_ep_skip_trbs(), dwc3_gadget_ep_cleanup_cancelled_requests() and dwc3_gadget_ep_cleanup_completed_requests() functions in drivers/usb/dwc3/gadget.c. A local user can perform a denial of service (DoS) attack.

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/1c6e5dc3b639c96e6839a8d1b8e951923fdfd34a
https://git.kernel.org/stable/c/2424307cdf421ac72075a1384eae4e4199ab6457
https://git.kernel.org/stable/c/26a7e6832afe9d9a991cfd9015177f083cf959cc
https://git.kernel.org/stable/c/bf594d1d0c1d7b895954018043536ffd327844f9

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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.