CVE-2019-18885 Information

Description

fs/btrfs/volumes.c in the Linux kernel before 5.1 allows a btrfs_verify_dev_extents NULL pointer dereference via a crafted btrfs image because fs_devices-devices is mishandled within find_device aka CID-09ba3bc9dd15.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

http://packetstormsecurity.com/files/156185/Kernel-Live-Patch-Security-Notice-LSN-0062-1.html https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=09ba3bc9dd150457c506e4661380a6183af651c1 https://github.com/bobfuzzer/CVE-2019-18885 https://github.com/torvalds/linux/commit/09ba3bc9dd150457c506e4661380a6183af651c1 https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html https://security.netapp.com/advisory/ntap-20191205-0001/ https://usn.ubuntu.com/4254-1/ https://usn.ubuntu.com/4254-2/ https://usn.ubuntu.com/4258-1/ https://usn.ubuntu.com/4287-1/ https://usn.ubuntu.com/4287-2/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5