The dodoublefault function in arch/x86/kernel/traps.c in the Linux
kernel through 3.17.4 does not properly handle faults associated with
the Stack Segment (SS) segment register when espfix64 is involved,
which allows local users to cause a denial of service (panic) via a
modifyldt system call, as demonstrated by sigreturn32 in the
linux-clock-tests test suite.
Other sources
The dodoublefault function in arch/x86/kernel/traps.c in the Linux kernel through 3.17.4 does not properly handle faults associated with the Stack Segment (SS) segment register, which allows local users to cause a denial of service (panic) via a modifyldt system call, as demonstrated by sigreturn32 in the linux-clock-tests test suite.
SecAlerts Pty Ltd. 132 Wickham Terrace Fortitude Valley, QLD 4006, Australia info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.