CVE-2017-11472

Severity: high (CVSS 7.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-07-20 · updated 2026-06-17
Weakness: CWE-755

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

Linux kernel: through 4.11.9

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3b2d69114fefa474fca542e51119036dceb4aa6f
https://github.com/acpica/acpica/commit/a23325b2e583556eae88ed3f764e457786bf4df6
https://github.com/torvalds/linux/commit/3b2d69114fefa474fca542e51119036dceb4aa6f
https://usn.ubuntu.com/3619-1/
https://usn.ubuntu.com/3619-2/
https://usn.ubuntu.com/3754-1/
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3b2d69114fefa474fca542e51119036dceb4aa6f
https://github.com/acpica/acpica/commit/a23325b2e583556eae88ed3f764e457786bf4df6
https://github.com/torvalds/linux/commit/3b2d69114fefa474fca542e51119036dceb4aa6f
https://usn.ubuntu.com/3619-1/
https://usn.ubuntu.com/3619-2/
https://usn.ubuntu.com/3754-1/

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