CVE-2018-19824: Use After Free
First published: Mon Dec 03 2018(Updated: )
A flaw was found In the Linux kernel, through version 4.19.6, where a local user could exploit a use-after-free in the ALSA driver by supplying a malicious USB Sound device (with zero interfaces) that is mishandled in usb_audio_probe in sound/usb/card.c. An attacker could corrupt memory and possibly escalate privileges if the attacker is able to have physical access to the system.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <0:3.10.0-1062.el7 | 0:3.10.0-1062.el7 |
| redhat/kernel-rt | <0:4.18.0-80.11.1.rt9.156.el8_0 | 0:4.18.0-80.11.1.rt9.156.el8_0 |
| redhat/kernel | <0:4.18.0-80.11.1.el8_0 | 0:4.18.0-80.11.1.el8_0 |
| Android | ||
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.16-1 | |
| Linux kernel | <=4.19.6 | |
| Ubuntu Linux | =12.04 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =16.04 | |
| Ubuntu Linux | =18.04 | |
| Ubuntu Linux | =18.10 | |
| Debian | =8.0 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2018-19824 https://nvd.nist.gov/vuln/detail/CVE-2018-19824 https://www.openwall.com/lists/oss-security/2018/12/03/1
- https://bugzilla.redhat.com/show_bug.cgi?id=1655816
- https://access.redhat.com/errata/RHSA-2019:2029
- https://access.redhat.com/errata/RHSA-2019:2741
- https://access.redhat.com/errata/RHSA-2019:2703
- https://access.redhat.com/security/cve/cve-2018-19824
- http://www.securityfocus.com/bid/106109
- https://bugzilla.suse.com/show_bug.cgi?id=1118152
- https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/commit/?id=5f8cf712582617d523120df67d392059eaf2fc4b
- https://github.com/torvalds/linux/commit/5f8cf712582617d523120df67d392059eaf2fc4b
- https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
- https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
- https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
- https://support.f5.com/csp/article/K98155950
- https://usn.ubuntu.com/3879-1/
- https://usn.ubuntu.com/3879-2/
- https://usn.ubuntu.com/3930-1/
- https://usn.ubuntu.com/3930-2/
- https://usn.ubuntu.com/3931-1/
- https://usn.ubuntu.com/3931-2/
- https://usn.ubuntu.com/3933-1/
- https://usn.ubuntu.com/3933-2/
- https://launchpad.net/bugs/cve/CVE-2018-19824
- https://www.openwall.com/lists/oss-security/2018/12/03/1
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1655817
- https://source.android.com/docs/security/bulletin/2019-10-01 (Advisory)
- https://security-tracker.debian.org/tracker/CVE-2018-19824
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19824
- https://nvd.nist.gov/vuln/detail/CVE-2018-19824
- https://ubuntu.com/security/CVE-2018-19824
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2018-19824?
CVE-2018-19824 has a medium severity rating due to potential memory corruption by local users.
How do I fix CVE-2018-19824?
To mitigate CVE-2018-19824, update the kernel package to a version higher than 4.19.6 or apply the recommended patches provided by your Linux distribution.
Which Linux versions are affected by CVE-2018-19824?
CVE-2018-19824 affects Linux kernel versions up to and including 4.19.6.
Can CVE-2018-19824 be exploited remotely?
No, CVE-2018-19824 requires local access to exploit the vulnerability through a malicious USB sound device.
What kind of systems are vulnerable to CVE-2018-19824?
Systems running vulnerable versions of the Linux kernel, including Red Hat, Debian, and Ubuntu distributions, are susceptible to CVE-2018-19824.
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