What’s Vulnerable › Vulnerabilities

CVE-2019-19813

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-12-17 · updated 2026-06-17
• Weakness: CWE-416

Description

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.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 18.04
• Debian Linux: 9.0
• Linux kernel: 5.0.21
• Active IQ Unified Manager for VMware vSphere, Linux, and Microsoft Windows: from 9.5
• NetApp Aff A400 Firmware: all versions
• NetApp Aff A700S Firmware: all versions
• NetApp Data Availability Services: all versions
• NetApp Fas8300 Firmware: all versions
• NetApp Fas8700 Firmware: all versions
• NetApp H610S Firmware: all versions
• NetApp Hci Management Node: all versions
• NetApp Solidfire: all versions
• NetApp Steelstore Cloud Integrated Storage: all versions

References

• https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19813
• https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
• https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
• https://security.netapp.com/advisory/ntap-20200103-0001/
• https://usn.ubuntu.com/4414-1/
• https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19813
• https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
• https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
• https://security.netapp.com/advisory/ntap-20200103-0001/
• https://usn.ubuntu.com/4414-1/

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