Description
The acpi_ns_terminate() function in drivers/acpi/acpica/nsutils.c in the Linux kernel before 4.12 does not flush the operand cache and causes a kernel stack dump, which allows local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism (in the kernel through 4.9) via a crafted ACPI table.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://usn.ubuntu.com/3619-2/ ↗
- https://usn.ubuntu.com/3754-1/ ↗
- https://github.com/torvalds/linux/commit/3b2d69114fefa474fca542e51119036dceb4aa6f ↗
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3b2d69114fefa474fca542e51119036dceb4aa6f ↗
- https://github.com/acpica/acpica/commit/a23325b2e583556eae88ed3f764e457786bf4df6 ↗
- https://usn.ubuntu.com/3619-1/ ↗