CVE-2019-5612: Race Condition
First published: Thu Aug 29 2019(Updated: )
In FreeBSD 12.0-STABLE before r351264, 12.0-RELEASE before 12.0-RELEASE-p10, 11.3-STABLE before r351265, 11.3-RELEASE before 11.3-RELEASE-p3, and 11.2-RELEASE before 11.2-RELEASE-p14, the kernel driver for /dev/midistat implements a read handler that is not thread-safe. A multi-threaded program can exploit races in the handler to copy out kernel memory outside the boundaries of midistat's data buffer.
Credit: secteam@freebsd.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FreeBSD Kernel | =11.2 | |
| FreeBSD Kernel | =11.2-p10 | |
| FreeBSD Kernel | =11.2-p11 | |
| FreeBSD Kernel | =11.2-p12 | |
| FreeBSD Kernel | =11.2-p13 | |
| FreeBSD Kernel | =11.2-p2 | |
| FreeBSD Kernel | =11.2-p3 | |
| FreeBSD Kernel | =11.2-p4 | |
| FreeBSD Kernel | =11.2-p5 | |
| FreeBSD Kernel | =11.2-p6 | |
| FreeBSD Kernel | =11.2-p7 | |
| FreeBSD Kernel | =11.2-p8 | |
| FreeBSD Kernel | =11.2-p9 | |
| FreeBSD Kernel | =11.3 | |
| FreeBSD Kernel | =11.3 | |
| FreeBSD Kernel | =11.3-p1 | |
| FreeBSD Kernel | =11.3-p2 | |
| FreeBSD Kernel | =11.3-p3 | |
| FreeBSD Kernel | =12.0 | |
| FreeBSD Kernel | =12.0-p1 | |
| FreeBSD Kernel | =12.0-p3 | |
| FreeBSD Kernel | =12.0-p4 | |
| FreeBSD Kernel | =12.0-p5 | |
| FreeBSD Kernel | =12.0-p8 | |
| IBM Data ONTAP |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2019-5612?
CVE-2019-5612 has a high severity due to its potential exploitation in multi-threaded environments.
How do I fix CVE-2019-5612?
To fix CVE-2019-5612, upgrade to the patched versions of FreeBSD that include the necessary security updates.
Which FreeBSD versions are affected by CVE-2019-5612?
CVE-2019-5612 affects FreeBSD versions 11.2 before p14, 11.3 before p3, and 12.0 before p10.
What type of vulnerability is CVE-2019-5612?
CVE-2019-5612 is a thread safety issue related to the kernel driver for /dev/midistat.
Can CVE-2019-5612 be exploited remotely?
CVE-2019-5612 requires a local context for exploitation and is not a remote vulnerability.
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