#VU93139 Buffer overflow in Linux kernel - CVE-2021-47434
Published: June 24, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93139
Vulnerability risk: Low
CVSSv4.0: 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
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
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.
Remediation
Install update from vendor's website.
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