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.
References (6)
Core 6
Core References
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3619-2/
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3754-1/
Issue Tracking, Patch, Third Party Advisory x_refsource_confirm
https://github.com/torvalds/linux/commit/3b2d69114fefa474fca542e51119036dceb4aa6f
Issue Tracking, Patch, Third Party Advisory x_refsource_confirm
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3b2d69114fefa474fca542e51119036dceb4aa6f
Issue Tracking, Patch, Third Party Advisory x_refsource_confirm
https://github.com/acpica/acpica/commit/a23325b2e583556eae88ed3f764e457786bf4df6
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3619-1/
Scores
CVSS v3
7.1
EPSS
0.0007
EPSS Percentile
20.3%
Attack Vector
LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Details
CWE
CWE-755
Status
published
Products (1)
linux/linux_kernel
< 4.11.9
Published
Jul 20, 2017
Tracked Since
Feb 18, 2026