CVE-2019-18885

medium

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.

References

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://security.netapp.com/advisory/ntap-20191205-0001/

https://usn.ubuntu.com/4254-1/

https://usn.ubuntu.com/4254-2/

http://packetstormsecurity.com/files/156185/Kernel-Live-Patch-Security-Notice-LSN-0062-1.html

https://usn.ubuntu.com/4258-1/

https://usn.ubuntu.com/4287-1/

https://usn.ubuntu.com/4287-2/

https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html

https://www.oracle.com/security-alerts/cpuApr2021.html

Details

Source: MITRE

Published: 2019-11-14

Updated: 2021-06-14

Type: CWE-476

Risk Information

CVSS v2

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 5.5

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

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM