CVE-2020-25221

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.

Link	Resource
https://git.kernel.org/linus/8891adc61dce2a8a41fc0c23262b681c3ec4b73a	Issue Tracking Patch
https://git.kernel.org/linus/9fa2dd946743ae6f30dc4830da19147bf100a7f2	Issue Tracking Patch
https://www.openwall.com/lists/oss-security/2020/09/08/4	Mailing List Patch
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.7	Release Notes Vendor Advisory
http://www.openwall.com/lists/oss-security/2020/09/10/4	Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20201001-0003/	Third Party Advisory

Configuration 1

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* cpe:2.3:a:netapp:solidfire_&_hci_management_node:-:*:*:*:*:*:*:* cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:* cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:* cpe:2.3:a:netapp:solidfire,_enterprise_sds_&_hci_storage_node:-:*:*:*:*:*:*:*

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Published : 2020-09-10 02:15

Updated : 2023-02-02 10:23

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NVD link : CVE-2020-25221

Mitre link : CVE-2020-25221

Hci Compute Node

Netapp

CWE-672