CVE-2018-10902: Use After Free
First published: Wed Jun 13 2018(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.13-1 | |
| Debian | =8.0 | |
| Debian | =9.0 | |
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =16.04 | |
| Ubuntu | =18.04 | |
| Linux Kernel | ||
| redhat enterprise Linux desktop | =6.0 | |
| redhat enterprise Linux desktop | =7.0 | |
| redhat enterprise Linux server | =6.0 | |
| redhat enterprise Linux server | =7.0 | |
| redhat enterprise Linux workstation | =6.0 | |
| redhat enterprise Linux workstation | =7.0 |
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Reference Links
- 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
- https://launchpad.net/bugs/cve/CVE-2018-10902
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1620291
- https://bugzilla.redhat.com/show_bug.cgi?id=1590720
- https://git.kernel.org/linus/39675f7a7c7e7702f7d5341f1e0d01db746543a0
- https://security-tracker.debian.org/tracker/CVE-2018-10902
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10902
- https://nvd.nist.gov/vuln/detail/CVE-2018-10902
- https://ubuntu.com/security/CVE-2018-10902
Frequently Asked Questions
What is the severity of CVE-2018-10902?
The severity of CVE-2018-10902 is classified as medium due to the potential for local attackers to exploit the vulnerability.
How do I fix CVE-2018-10902?
To fix CVE-2018-10902, update your kernel to the latest available version, specifically versions such as 5.10.223-1 or 6.1.123-1 depending on your distribution.
What versions are affected by CVE-2018-10902?
CVE-2018-10902 affects specific versions of Debian, Ubuntu, Red Hat Enterprise Linux, and the Linux Kernel.
What type of attack does CVE-2018-10902 facilitate?
CVE-2018-10902 facilitates local privilege escalation attacks due to inadequate protection against concurrent access.
Is CVE-2018-10902 present in the latest kernel versions?
CVE-2018-10902 has been addressed in kernel updates released after its discovery, so ensure your system is running an updated kernel version.
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