Linux Kernel up to 5.0 fs/btrfs/volumes.c null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k0.00

A vulnerability has been found in Linux Kernel up to 5.0 (Operating System) and classified as problematic. Affected by this vulnerability is some unknown processing of the file fs/btrfs/volumes.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

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.

The weakness was published 11/14/2019. This vulnerability is known as CVE-2019-18885 since 11/12/2019. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 5.1 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.1
Patch: git.kernel.org

Timelineinfo

11/12/2019 🔍
11/14/2019 +2 days 🔍
11/15/2019 +1 days 🔍
02/20/2024 +1558 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 156185
Status: Not defined

CVE: CVE-2019-18885 (🔍)
GCVE: GCVE-0-2019-18885

Entryinfo

Created: 11/15/2019 11:36 AM
Updated: 02/20/2024 02:11 PM
Changes: 11/15/2019 11:36 AM (38), 11/15/2019 11:41 AM (18), 02/20/2024 02:10 PM (6), 02/20/2024 02:11 PM (1)
Complete: 🔍
Cache ID: 18:19B:40

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