CVE-2019-19377: Use After Free
First published: Fri Nov 29 2019(Updated: )
In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and unmounting can lead to a use-after-free in btrfs_queue_work in fs/btrfs/async-thread.c.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=2.6.12<4.19.156 | |
| Linux Kernel | >=4.20<5.4.33 | |
| Linux Kernel | >=5.5.0<5.5.18 | |
| Linux Kernel | >=5.6<5.6.5 | |
| NetApp Active IQ Unified Manager for VMware vSphere | ||
| NetApp Cloud Backup | ||
| NetApp SteelStore Cloud Integrated Storage | ||
| NetApp SolidFire | ||
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 |
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Reference Links
- https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19377
- https://security.netapp.com/advisory/ntap-20200103-0001/
- https://usn.ubuntu.com/4367-1/
- https://usn.ubuntu.com/4369-1/
- https://usn.ubuntu.com/4414-1/
- https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
- https://launchpad.net/bugs/cve/CVE-2019-19377
- https://git.kernel.org/linus/b3ff8f1d380e65dddd772542aa9bff6c86bf715a
- https://security-tracker.debian.org/tracker/CVE-2019-19377
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19377
- https://nvd.nist.gov/vuln/detail/CVE-2019-19377
- https://ubuntu.com/security/CVE-2019-19377
Frequently Asked Questions
What is the severity of CVE-2019-19377?
CVE-2019-19377 is classified with high severity due to the potential for a use-after-free vulnerability allowing for arbitrary code execution.
How do I fix CVE-2019-19377?
To fix CVE-2019-19377, upgrade your kernel to version 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.119-1, or 6.12.10-1.
What systems are affected by CVE-2019-19377?
CVE-2019-19377 affects Linux kernel versions between 2.6.12 and 5.4.33, as well as versions up to 5.6.5.
What type of vulnerability is CVE-2019-19377?
CVE-2019-19377 is a use-after-free vulnerability stemming from operations on a crafted btrfs filesystem image.
Can CVE-2019-19377 lead to system crashes?
Yes, exploitation of CVE-2019-19377 can potentially lead to system crashes or create instability in affected systems.
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