PT-2017-12039 · Linux+3 · Linux Kernel+3

Kkamagui + 1 · Published 2017-07-12 · Updated 2019-10-03 · CVE-2017-11472

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.12 Linux kernel versions prior to 4.9 (for KASLR protection mechanism bypass)

Description The issue allows local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism via a crafted ACPI table. This is due to the acpi ns terminate() function in drivers/acpi/acpica/nsutils.c not flushing the operand cache, which causes a kernel stack dump.

Recommendations For Linux kernel versions prior to 4.12, update to version 4.12 or later to resolve the issue. For Linux kernel versions prior to 4.9, update to version 4.9 or later to prevent KASLR protection mechanism bypass. As a temporary workaround, consider restricting access to crafted ACPI tables until a patch is available.

Fix

Improper Handling of Exceptional Conditions

Weakness Enumeration

CWE-755

Related Identifiers

ALT-PU-2017-1854

ALT-PU-2018-1991

CVE-2017-11472

OPENSUSE-SU-2017_2494-1

OPENSUSE-SU-2017_2495-1

SUSE-SU-2017:2847-1

SUSE-SU-2017:2869-1

SUSE-SU-2017:2956-1

USN-3619-1

USN-3619-2

USN-3754-1

Affected Products

Alt Linux

Linux Kernel

Suse

Ubuntu

References · 398

• https://github.com/torvalds/linux/commit/3b2d69114fefa474fca542e51119036dceb4aa6f · Patch
• https://github.com/acpica/acpica/commit/a23325b2e583556eae88ed3f764e457786bf4df6 · Patch
• https://ubuntu.com/security/CVE-2018-13094 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-16536 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3754-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-16537 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2017-11472 · Security Note
• https://ubuntu.com/security/CVE-2017-16535 · Vendor Advisory
• https://usn.ubuntu.com/3619-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-1000026 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-17448 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-16643 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3619-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-6927 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-5332 · Vendor Advisory