Buffer overflow in Linux kernel usb host driver

1) Buffer overflow

EUVDB-ID: #VU93139

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-2021-47434

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory corruption within the xhci_handle_stopped_cmd_ring() function in drivers/usb/host/xhci-ring.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.14 - 5.15 rc7

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:4.14:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.14.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.14.0:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.14.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.14.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.14.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.14.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.14.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.14.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.14.7:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/22bcb65ea41072ab5d03c0c6290e04e0df6d09a0
https://git.kernel.org/stable/c/62c182b5e763e5f4062e72678e72ce3e02dd4d1b
https://git.kernel.org/stable/c/01c2dcb67e71c351006dd17cbba86c26b7f61eaf
https://git.kernel.org/stable/c/dec944bb7079b37968cf69c8a438f91f15c4cc61
https://git.kernel.org/stable/c/e54abefe703ab7c4e5983e889babd1447738ca42
https://git.kernel.org/stable/c/ff0e50d3564f33b7f4b35cadeabd951d66cfc570
https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.252
https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.213
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.75
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.14
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.155

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.