CVE-2018-10902 Information

Description

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.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

http://www.securityfocus.com/bid/105119 http://www.securitytracker.com/id/1041529 https://access.redhat.com/errata/RHSA-2018:3083 https://access.redhat.com/errata/RHSA-2018:3096 https://access.redhat.com/errata/RHSA-2019:0415 https://access.redhat.com/errata/RHSA-2019:0641 https://access.redhat.com/errata/RHSA-2019:3217 https://access.redhat.com/errata/RHSA-2019:3967 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10902 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=39675f7a7c7e7702f7d5341f1e0d01db746543a0 https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html https://usn.ubuntu.com/3776-1/ https://usn.ubuntu.com/3776-2/ https://usn.ubuntu.com/3847-1/ https://usn.ubuntu.com/3847-2/ https://usn.ubuntu.com/3847-3/ https://usn.ubuntu.com/3849-1/ https://usn.ubuntu.com/3849-2/ https://www.debian.org/security/2018/dsa-4308

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8