CVE-2019-18885 : fs/btrfs/volumes.c in the Linux kernel before 5.1 allows a btrfs_verify_dev

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 2019-11-14 14:15:12

Updated 2021-06-14 18:15:18

Source MITRE

View at NVD, CVE.org

Vulnerability category: Memory Corruption

Products affected by CVE-2019-18885

Linux » Linux Kernel
Versions before (<) 5.1
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Matching versions

Threat overview for CVE-2019-18885

Top countries where our scanners detected CVE-2019-18885

Top open port discovered on systems with this issue 49152

IPs affected by CVE-2019-18885 22,870

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2019-18885!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2019-18885

EPSS FAQ

0.10%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 40 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-18885

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
2.1	LOW	AV:L/AC:L/Au:N/C:N/I:N/A:P	3.9	2.9	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
5.5	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	1.8	3.6	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2019-18885

CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2019-18885

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

Kernel Live Patch Security Notice LSN-0062-1 ≈ Packet Storm

CVEs referencing this url
https://usn.ubuntu.com/4254-1/

USN-4254-1: Linux kernel vulnerabilities | Ubuntu security notices

CVEs referencing this url
https://github.com/bobfuzzer/CVE-2019-18885

GitHub - bobfuzzer/CVE-2019-18885
Exploit;Third Party Advisory
https://usn.ubuntu.com/4258-1/

USN-4258-1: Linux kernel vulnerabilities | Ubuntu security notices

CVEs referencing this url
https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html

[SECURITY] [DLA 2323-1] linux-4.19 new package

CVEs referencing this url
https://usn.ubuntu.com/4287-2/

USN-4287-2: Linux kernel (Azure) vulnerabilities | Ubuntu security notices

CVEs referencing this url
https://github.com/torvalds/linux/commit/09ba3bc9dd150457c506e4661380a6183af651c1

btrfs: merge btrfs_find_device and find_device · torvalds/linux@09ba3bc · GitHub
Patch;Third Party Advisory
https://security.netapp.com/advisory/ntap-20191205-0001/

November 2019 Linux Kernel Vulnerabilities in NetApp Products | NetApp Product Security

CVEs referencing this url
https://www.oracle.com/security-alerts/cpuApr2021.html

Oracle Critical Patch Update Advisory - April 2021

CVEs referencing this url
https://usn.ubuntu.com/4287-1/

USN-4287-1: Linux kernel vulnerabilities | Ubuntu security notices

CVEs referencing this url
https://usn.ubuntu.com/4254-2/

USN-4254-2: Linux kernel (Xenial HWE) vulnerabilities | Ubuntu security notices

CVEs referencing this url
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=09ba3bc9dd150457c506e4661380a6183af651c1

kernel/git/torvalds/linux.git - Linux kernel source tree
Patch;Third Party Advisory