Out-of-bounds read in Linux kernel - CVE-2017-8831
Published: May 8, 2017 / Updated: June 1, 2021
Vulnerability identifier: #VU92794
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-8831
CWE-ID: CWE-125
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 non-authenticated attacker to execute arbitrary code.
The saa7164_bus_get function in drivers/media/pci/saa7164/saa7164-bus.c in the Linux kernel through 4.11.5 allows local users to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact by changing a certain sequence-number value, aka a 'double fetch' vulnerability.
How to mitigate CVE-2017-8831
Install update from vendor's repository.
Sources
- https://bugzilla.kernel.org/show_bug.cgi?id=195559
- https://github.com/stoth68000/media-tree/commit/354dd3924a2e43806774953de536257548b5002c
- http://www.securityfocus.com/archive/1/540770/30/0/threaded
- http://www.securityfocus.com/bid/99619
- https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
- https://usn.ubuntu.com/3754-1/