CVE-2018-10902

Impact:
Important
Public Date:
2018-08-21
CWE:
CWE-416
Bugzilla:
1590720: CVE-2018-10902 kernel: MIDI driver race condition leads to a double-free
It was found that the raw midi kernel driver does not protect against concurrent access which leads to a double realloc (double free) in snd_rawmidi_input_params() and snd_rawmidi_output_status() which are part of snd_rawmidi_ioctl() handler in rawmidi.c file. A malicious local attacker could possibly use this for privilege escalation.

Find out more about CVE-2018-10902 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This flaw affects all current shipping releases of Red Hat Enterprise Linux. This flaw requires real or emulated midi hardware available in the system. Fixes will be delivered when available.

CVSS v3 metrics

NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.

CVSS3 Base Score 7.8
CVSS3 Base Metrics CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity Impact High
Availability Impact High

Affected Packages State

Platform Package State
Red Hat Enterprise MRG 2 kernel-rt Affected
Red Hat Enterprise Linux 7 kernel-alt Affected
Red Hat Enterprise Linux 7 kernel Affected
Red Hat Enterprise Linux 7 kernel-rt Affected
Red Hat Enterprise Linux 6 kernel Affected
Red Hat Enterprise Linux 5 kernel Will not fix

Acknowledgements

Red Hat would like to thank Trend Micro Zero Day Initiative for reporting this issue.

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