CVE-2020-15436 — MEDIUM (6.7)

Q: What is CVE-2020-15436?

CVE-2020-15436 is a vulnerability with a CVSS score of 6.7 (MEDIUM). Use-after-free vulnerability in fs/block_dev.c in the Linux kernel before 5.8 allows local users to gain privileges or cause a denial of service by leveraging improper access to a certain error field.

Q: How severe is CVE-2020-15436?

CVE-2020-15436 has been rated MEDIUM with a CVSS base score of 6.7/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2020-15436?

Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Broadcom Brocade Fabric Operating System Firmware, Netapp Cloud Backup, Netapp Solidfire \& Hci Management Node, Netapp Solidfire Baseboard Management Controller Firmware.

Vulnerability Description

Use-after-free vulnerability in fs/block_dev.c in the Linux kernel before 5.8 allows local users to gain privileges or cause a denial of service by leveraging improper access to a certain error field.

CVSS Score

6.7

MEDIUM

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Linux	Linux Kernel	>= 2.6.38, < 4.4.229
Broadcom	Brocade Fabric Operating System Firmware	-
Netapp	Cloud Backup	-
Netapp	Solidfire \& Hci Management Node	-
Netapp	Solidfire Baseboard Management Controller Firmware	-
Netapp	Solidfire Baseboard Management Controller	-
Netapp	H410C Firmware	-
Netapp	H410C	-
Netapp	H610C Firmware	-
Netapp	H610C	-
Netapp	H610S Firmware	-
Netapp	H610S	-
Netapp	H615C Firmware	-
Netapp	H615C	-
Netapp	A700S Firmware	-
Netapp	A700S	-
Netapp	Aff 8700 Firmware	-
Netapp	Aff 8700	-
Netapp	Fas 8700 Firmware	-
Netapp	Fas 8700	-

Related Weaknesses (CWE)

CWE-416

References

https://lkml.org/lkml/2020/6/7/379ExploitPatchVendor Advisory
https://security.netapp.com/advisory/ntap-20201218-0002/Third Party Advisory
https://lkml.org/lkml/2020/6/7/379ExploitPatchVendor Advisory
https://security.netapp.com/advisory/ntap-20201218-0002/Third Party Advisory

FAQ

What is CVE-2020-15436?

CVE-2020-15436 is a vulnerability with a CVSS score of 6.7 (MEDIUM). Use-after-free vulnerability in fs/block_dev.c in the Linux kernel before 5.8 allows local users to gain privileges or cause a denial of service by leveraging improper access to a certain error field.

How severe is CVE-2020-15436?

CVE-2020-15436 has been rated MEDIUM with a CVSS base score of 6.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-15436?

Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Broadcom Brocade Fabric Operating System Firmware, Netapp Cloud Backup, Netapp Solidfire \& Hci Management Node, Netapp Solidfire Baseboard Management Controller Firmware.