CVE-2019-19813: Use After Free
First published: Tue Dec 17 2019(Updated: )
In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in __mutex_lock in kernel/locking/mutex.c. This is related to mutex_can_spin_on_owner in kernel/locking/mutex.c, __btrfs_qgroup_free_meta in fs/btrfs/qgroup.c, and btrfs_insert_delayed_items in fs/btrfs/delayed-inode.c.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | =5.0.21 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =16.04 | |
| Ubuntu Linux | =18.04 | |
| Debian GNU/Linux | =9.0 | |
| NetApp Active IQ Unified Manager for VMware vSphere | >=9.5 | |
| netapp data availability services | ||
| netapp hci management node | ||
| netapp solidfire | ||
| NetApp SteelStore | ||
| All of | ||
| NetApp AFF A700s Firmware | ||
| NetApp AFF A700s Firmware | ||
| All of | ||
| NetApp FAS8300 Firmware | ||
| NetApp FAS8300 Firmware | ||
| All of | ||
| NetApp FAS 8700 | ||
| NetApp FAS8700 | ||
| All of | ||
| NetApp AFF A400 | ||
| NetApp AFF A400 | ||
| All of | ||
| netapp h610s firmware | ||
| netapp h610s | ||
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 | |
| Ubuntu | =14.04 | |
| Ubuntu | =16.04 | |
| Ubuntu | =18.04 | |
| Debian | =9.0 | |
| NetApp AFF A700s Firmware | ||
| NetApp AFF A700s Firmware | ||
| NetApp FAS8300 Firmware | ||
| NetApp FAS8300 Firmware | ||
| NetApp FAS 8700 | ||
| NetApp FAS8700 | ||
| NetApp AFF A400 | ||
| NetApp AFF A400 | ||
| netapp h610s firmware | ||
| netapp h610s |
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Reference Links
- https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19813
- https://security.netapp.com/advisory/ntap-20200103-0001/
- https://usn.ubuntu.com/4414-1/
- https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
- https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
- https://launchpad.net/bugs/cve/CVE-2019-19813
- https://git.kernel.org/linus/6bf9e4bd6a277840d3fe8c5d5d530a1fbd3db592
- https://security-tracker.debian.org/tracker/CVE-2019-19813
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19813
- https://nvd.nist.gov/vuln/detail/CVE-2019-19813
- https://ubuntu.com/security/CVE-2019-19813
Frequently Asked Questions
What is the severity of CVE-2019-19813?
CVE-2019-19813 is classified as a high-severity vulnerability due to the potential for a use-after-free condition affecting system stability.
How do I fix CVE-2019-19813?
To resolve CVE-2019-19813, upgrade to Linux kernel versions 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-2019-19813?
CVE-2019-19813 affects Linux kernel version 5.0.21 and related systems including Debian and Ubuntu versions.
What type of vulnerability is CVE-2019-19813?
CVE-2019-19813 is a use-after-free vulnerability that occurs in the Linux kernel during synchronization operations.
Is there a workaround for CVE-2019-19813?
There are no official workarounds for CVE-2019-19813; the best mitigation is to apply the recommended kernel updates.
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