Description

In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image and performing some operations can cause slab-out-of-bounds write access in __btrfs_map_block in fs/btrfs/volumes.c, because a value of 1 for the number of data stripes is mishandled.

References

https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19816

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

https://lists.debian.org/debian-lts-announce/2020/12/msg00015.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/

Details

Risk Information

CVSS v2

CVSS v3