PT-2017-1180 · Linux+2 · Linux Kernel+2

Alan J. Wylie · Published 2017-01-14 · Updated 2017-07-21 · CVE-2017-5550

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.9.5

Description The issue is related to an error in the pipe advance function in the Linux kernel, which can allow local users to obtain sensitive information from uninitialized heap-memory locations in certain circumstances. This can occur when reading from a pipe after an incorrect buffer-release decision. The estimated number of potentially affected devices worldwide is not specified.

Recommendations For Linux kernel versions prior to 4.9.5, update to version 4.9.5 or later to resolve the issue. As a temporary workaround, consider restricting access to the pipe advance function in the Linux kernel until a patch is available.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

ALT-PU-2017-1063

ALT-PU-2017-1330

BDU:2017-00291

CVE-2017-5550

USN-3361-1

Affected Products

Alt Linux

Linux Kernel

Ubuntu

References · 60

• https://github.com/torvalds/linux/commit/b9dc6f65bc5e232d1c05fe34b5daadc7e8bbf1fb · Patch
• https://ubuntu.com/security/CVE-2017-2618 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-2671 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-5551 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-2583 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-7273 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-9604 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-5546 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-7261 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-8405 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-10208 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-8924 · Vendor Advisory
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b9dc6f65bc5e232d1c05fe34b5daadc7e8bbf1fb · Patch
• https://ubuntu.com/security/CVE-2016-8636 · Vendor Advisory
• http://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.5 · Vendor Advisory