Public Date:
1500391: CVE-2017-15274 kernel: dereferencing NULL payload with nonzero length
A flaw was found in the implementation of associative arrays where the add_key systemcall and KEYCTL_UPDATE operations allowed for a NULL payload with a nonzero length. When accessing the payload within this length parameters value, an unprivileged user could trivially cause a NULL pointer dereference (kernel oops).

Find out more about CVE-2017-15274 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue affects the Linux kernel packages as shipped with Red Hat Enterprise
Linux 5,6,7, MRG-2 and realtime kernels.

Red Hat Enterprise Linux 5 has transitioned to Production phase 3.
During the Production 3 Phase, Critical impact Security Advisories (RHSAs)
and selected Urgent Priority Bug Fix Advisories (RHBAs) may be released
as they become available.

At this time this bug is not meet this critera and is unlikley to be fixed
for these releases.

The official life cycle policy can be reviewed here:

Future Linux kernel updates for the products in production phase 1 and 2, namely Red Hat Enterprise
Linux 6, 7 and MRG-2 may address this issue.

CVSS v3 metrics

CVSS3 Base Score 5.5
CVSS3 Base Metrics CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Impact None
Availability Impact High

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 7 (kernel) RHSA-2018:1062 2018-04-10
Red Hat Enterprise Linux for Real Time for NFV (v. 7) (kernel-rt) RHSA-2018:0676 2018-04-10

Affected Packages State

Platform Package State
Red Hat Enterprise MRG 2 realtime-kernel Will not fix
Red Hat Enterprise Linux 7 kernel-alt Not affected
Red Hat Enterprise Linux 6 kernel Will not fix
Red Hat Enterprise Linux 5 kernel Will not fix
Last Modified