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 breakdown
CVSS 3.0
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Unknown / kerneln/a – n/a
References
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2018:3083
- VENDOR_ADVISORYhttps://usn.ubuntu.com/3776-1/
- VENDOR_ADVISORYhttps://usn.ubuntu.com/3776-2/
- VENDOR_ADVISORYhttps://usn.ubuntu.com/3847-1/
- MAILING_LISThttps://lists.debian.org/debian-lts-announce/2018/10/msg00003.html
- VENDOR_ADVISORYhttps://usn.ubuntu.com/3847-2/
- MISChttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10902
- VENDOR_ADVISORYhttps://usn.ubuntu.com/3849-1/
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2019:0415
- VENDOR_ADVISORYhttps://usn.ubuntu.com/3849-2/
- MISChttp://www.securitytracker.com/id/1041529
- VENDOR_ADVISORYhttps://www.debian.org/security/2018/dsa-4308
- MISChttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=39675f7a7c7e7702f7d5341f1e0d01db746543a0
- VENDOR_ADVISORYhttps://usn.ubuntu.com/3847-3/
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2018:3096
- MISChttp://www.securityfocus.com/bid/105119
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2019:0641
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2019:3217
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2019:3967