Description: btrfs: crafted image causes null deref in btrfs_verify_dev_extent
References:
 https://github.com/bobfuzzer/CVE-2019-18885
Notes:
Bugs:
upstream: released (5.1-rc1) [09ba3bc9dd150457c506e4661380a6183af651c1]
4.19-upstream-stable:
4.9-upstream-stable:
3.16-upstream-stable:
sid: released (5.2.6-1)
4.19-buster-security:
4.9-stretch-security:
3.16-jessie-security: