Race condition in the ec_device_ioctl_xcmd function in drivers/platform/chrome/cros_ec_dev.c in the...

Vulnerability Description

Race condition in the ec_device_ioctl_xcmd function in drivers/platform/chrome/cros_ec_dev.c in the Linux kernel before 4.7 allows local users to cause a denial of service (out-of-bounds array access) by changing a certain size value, aka a "double fetch" vulnerability.

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=096cdc6f52225835ff503f987a0d68ef770bb78e
• https://bugzilla.kernel.org/show_bug.cgi?id=120131
• https://github.com/torvalds/linux/commit/096cdc6f52225835ff503f987a0d68ef770bb78e
• http://www.securityfocus.com/bid/91553
• https://bugzilla.redhat.com/show_bug.cgi?id=1353490
• http://seclists.org/bugtraq/2016/Jul/20