Use After Free in Linux
CVE-2018-10902
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.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Linux — versions 3.16.58, 3.18.117, 4.4.144
- Linux Kernel
- [Unknown] Kernel
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 8.0, 9.0
- Red Hat Enterprise Linux Desktop — versions 6.0, 7.0
- Red Hat Enterprise Linux Server — versions 6.0, 7.0
- Red Hat Enterprise Linux Workstation — versions 6.0, 7.0
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2018:3083 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3776-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3776-2/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3847-1/ (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/10/msg00003.html (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/3847-2/ (vendor-advisory, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- usn.ubuntu.com/3849-1/ (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:0415 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3849-2/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-10902?
- CVE-2018-10902 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2018-08-21.
- How severe is CVE-2018-10902?
- High severity. CVSS v3 base score is 7.8 out of 10.