CVE-2019-20054 : In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop

In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c, related to put_links, aka CID-23da9588037e.

Published 2019-12-28 05:15:11

Updated 2023-01-20 20:19:01

Source MITRE

View at NVD, CVE.org

Vulnerability category: Memory Corruption

Products affected by CVE-2019-20054

Linux » Linux Kernel
Versions before (<) 5.0.6
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Matching versions
Netapp » Cloud Backup » Version: N/A
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
Matching versions
Netapp » Steelstore Cloud Integrated Storage » Version: N/A
cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*
Matching versions
Netapp » E-series Santricity Os Controller
Versions from including (>=) 11.0 and up to, including, (<=) 11.70.2
cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:*
Matching versions
Netapp » Fas/aff Baseboard Management Controller » Version: N/A
cpe:2.3:a:netapp:fas\/aff_baseboard_management_controller:-:*:*:*:*:*:*:*
Matching versions
Netapp » Active Iq Unified Manager » Version: N/A For Vmware Vsphere
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
Matching versions
Netapp » Data Availability Services » Version: N/A
cpe:2.3:a:netapp:data_availability_services:-:*:*:*:*:*:*:*
Matching versions
Netapp » H610s Firmware » Version: N/A
cpe:2.3:o:netapp:h610s_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Netapp » H610s » Version: N/A
Netapp » Solidfire & Hci Management Node » Version: N/A
cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:*
Matching versions
Netapp » Solidfire Baseboard Management Controller » Version: N/A
cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:*
Matching versions
Netapp » 8300 Firmware » Version: N/A
cpe:2.3:o:netapp:8300_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Netapp » 8300 » Version: N/A
Netapp » 8700 Firmware » Version: N/A
cpe:2.3:o:netapp:8700_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Netapp » 8700 » Version: N/A
Netapp » A400 Firmware » Version: N/A
cpe:2.3:o:netapp:a400_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Netapp » A400 » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2019-20054

EPSS FAQ

0.05%

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

~ 12 %

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

CVSS scores for CVE-2019-20054

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.9	MEDIUM	AV:L/AC:L/Au:N/C:N/I:N/A:C	3.9	6.9	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete
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-2019-20054

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-2019-20054

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=89189557b47b35683a27c80ee78aef18248eefb4

kernel/git/torvalds/linux.git - Linux kernel source tree
Patch;Vendor Advisory
https://security.netapp.com/advisory/ntap-20200204-0002/

January 2020 Linux Kernel Vulnerabilities in NetApp Products | NetApp Product Security
Third Party Advisory

CVEs referencing this url
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.6

Release Notes;Vendor Advisory

CVEs referencing this url
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html

[security-announce] openSUSE-SU-2020:0336-1: important: Security update
Broken Link;Third Party Advisory

CVEs referencing this url
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.11

Release Notes;Vendor Advisory

CVEs referencing this url
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=23da9588037ecdd4901db76a5b79a42b529c4ec3

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

Jump to

Vulnerability Details : CVE-2019-20054

Products affected by CVE-2019-20054

Exploit prediction scoring system (EPSS) score for CVE-2019-20054

CVSS scores for CVE-2019-20054

CWE ids for CVE-2019-20054

References for CVE-2019-20054