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.
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19377
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
https://security.netapp.com/advisory/ntap-20200103-0001/
https://usn.ubuntu.com/4367-1/
Source: MITRE
Published: 2019-11-29
Updated: 2020-12-11
Type: CWE-416
Base Score: 6.8
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 8.6
Severity: MEDIUM
Base Score: 7.8
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1.8
Severity: HIGH