NULL pointer dereference in Linux Kernel
CVE-2019-18885
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.012 (67.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- usn.ubuntu.com/4254-1/ (vendor-advisory)
- usn.ubuntu.com/4254-2/ (vendor-advisory)
- usn.ubuntu.com/4258-1/ (vendor-advisory)
- usn.ubuntu.com/4287-1/ (vendor-advisory)
- usn.ubuntu.com/4287-2/ (vendor-advisory)
- lists.debian.org/debian-lts-announce/2020/08/msg00019.html (mailing-list)
- www.oracle.com/security-alerts/cpuApr2021.html
- github.com/torvalds/linux/commit/09ba3bc9dd150457c506e4661380a6183af651c1 (Patch, Third Party Advisory)
- github.com/bobfuzzer/CVE-2019-18885 (Exploit, Third Party Advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-18885?
- CVE-2019-18885 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2019-11-14.
- How severe is CVE-2019-18885?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2019-18885 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.