PT-2019-14868 · Linux+1 · Linux Kernel+1

Dan Carpenter · Published 2018-07-03 · Updated 2019-09-27 · CVE-2019-16921

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.17

Description The issue is related to the hns roce alloc ucontext function in the Linux kernel, which does not properly initialize the resp data structure. This could potentially allow attackers to obtain sensitive information from kernel stack memory.

Recommendations For Linux kernel versions prior to 4.17, update to version 4.17 or later to resolve the issue.

Fix

Improper Initialization

Weakness Enumeration

CWE-665

Related Identifiers

ALT-PU-2018-1971

ALT-PU-2018-1976

ALT-PU-2019-1433

CVE-2019-16921

Affected Products

Alt Linux

Linux Kernel

References · 7

• https://github.com/torvalds/linux/commit/df7e40425813c50cd252e6f5e348a81ef1acae56 · Patch
• https://ubuntu.com/security/CVE-2019-16921 · Vendor Advisory
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=df7e40425813c50cd252e6f5e348a81ef1acae56 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-16921 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-16921 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-16921 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-16921 · Security Note