CVE-2019-19448

Description

In the Linux kernel 5.0.21 and 5.3.11, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in try_merge_free_space in fs/btrfs/free-space-cache.c because the pointer to a left data structure can be the same as the pointer to a right data structure.

References

https://usn.ubuntu.com/4578-1/

https://security.netapp.com/advisory/ntap-20200103-0001/

https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html

https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html

https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html

https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19448

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3