Improper Resource Shutdown or Release in Linux kernel - CVE-2017-8071
Published: April 23, 2017 / Updated: August 8, 2020
Vulnerability identifier: #VU39152
CSH Severity: Low
CVSS v4.0: 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-2017-8071
CWE-ID: CWE-404
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.
drivers/hid/hid-cp2112.c in the Linux kernel 4.9.x before 4.9.9 uses a spinlock without considering that sleeping is possible in a USB HID request callback, which allows local users to cause a denial of service (deadlock) via unspecified vectors.
How to mitigate CVE-2017-8071
Install update from vendor's website.
Sources
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.9
- http://www.openwall.com/lists/oss-security/2017/04/16/4
- http://www.securityfocus.com/bid/97991
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7a7b5df84b6b4e5d599c7289526eed96541a0654
- https://github.com/torvalds/linux/commit/7a7b5df84b6b4e5d599c7289526eed96541a0654