SB2017050838 - Out-of-bounds read in Linux kernel
Published: May 8, 2017
Security Bulletin ID
SB2017050838
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Physical access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2017-8831)
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.
Remediation
Install update from vendor's website.
References
- 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/