CVE-2017-15121

Impact:
Moderate
Public Date:
2017-12-05
CWE:
CWE-20
Bugzilla:
1520893: CVE-2017-15121 kernel: vfs: BUG in truncate_inode_pages_range() and fuse client
A non-privileged user is able to mount a fuse filesystem on RHEL 6 or 7 and crash a system if an application punches a hole in a file that does not end aligned to a page boundary.

Find out more about CVE-2017-15121 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, Red Hat Enterprise Linux 7 for ARM and Red Hat Enterprise Linux 7 for Power LE.

This issue affects the versions of the Linux kernel as shipped with 6, 7 and Red Hat Enterprise MRG 2. Future updates for the respective releases 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
Red Hat Enterprise Linux 6 (kernel) RHSA-2018:1854 2018-06-19

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 5 kernel Not affected

Acknowledgements

This issue was discovered by Miklos Szeredi (Red Hat).
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