CVE-2020-25221

Published: Sep 10, 2020Modified: Jun 17, 2026

7.8

Vector

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

Exploitability: 1.8 / Impact: 5.9

Source: NVD

Description

get_gate_page in mm/gup.c in the Linux kernel 5.7.x and 5.8.x before 5.8.7 allows privilege escalation because of incorrect reference counting (caused by gate page mishandling) of the struct page that backs the vsyscall page. The result is a refcount underflow. This can be triggered by any 64-bit process that can use ptrace() or process_vm_readv(), aka CID-9fa2dd946743.

Affected (6)

Products: Linux: Linux Kernel · Netapp: Cloud Backup, Hci Compute Node, Solidfire, Enterprise Sds & Hci Storage Node, Solidfire & Hci Management Node, Solidfire Baseboard Management Controller

1 product

5 products

Hci Compute Node

Solidfire, Enterprise Sds & Hci Storage Node

Solidfire & Hci Management Node

Solidfire Baseboard Management Controller

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Linux Linux Kernel	From 5.7.0 to 5.8.7

Configuration B

5 vulnerable

Vulnerable Software	Affected Versions
Netapp Cloud Backup	All versions
Netapp Hci Compute Node	All versions
Netapp Solidfire, Enterprise Sds & Hci Storage Node	All versions
Netapp Solidfire & Hci Management Node	All versions
Netapp Solidfire Baseboard Management Controller	All versions

Related CWEs

Operation on a Resource after Expiration or Release

The product uses, accesses, or otherwise operates on a resource after that resource has been expired, released, or revoked.

References (12)

http://www.openwall.com/lists/oss-security/2020/09/10/4

Source: cve@mitre.org

Mailing ListThird Party Advisory

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.7

Source: cve@mitre.org

Release NotesVendor Advisory

https://git.kernel.org/linus/8891adc61dce2a8a41fc0c23262b681c3ec4b73a

Source: cve@mitre.org

Issue TrackingPatchVendor Advisory

https://git.kernel.org/linus/9fa2dd946743ae6f30dc4830da19147bf100a7f2

Source: cve@mitre.org

Issue TrackingPatchVendor Advisory

https://security.netapp.com/advisory/ntap-20201001-0003/

Source: cve@mitre.org

Third Party Advisory

https://www.openwall.com/lists/oss-security/2020/09/08/4

Source: cve@mitre.org

Mailing ListPatchThird Party Advisory

http://www.openwall.com/lists/oss-security/2020/09/10/4

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.7

Source: af854a3a-2127-422b-91ae-364da2661108

Release NotesVendor Advisory

https://git.kernel.org/linus/8891adc61dce2a8a41fc0c23262b681c3ec4b73a

Source: af854a3a-2127-422b-91ae-364da2661108

Issue TrackingPatchVendor Advisory

https://git.kernel.org/linus/9fa2dd946743ae6f30dc4830da19147bf100a7f2

Source: af854a3a-2127-422b-91ae-364da2661108

Issue TrackingPatchVendor Advisory

https://security.netapp.com/advisory/ntap-20201001-0003/

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://www.openwall.com/lists/oss-security/2020/09/08/4

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListPatchThird Party Advisory

Timeline

No history available yet.