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.
References
Link | Resource |
---|---|
http://www.openwall.com/lists/oss-security/2020/09/10/4 | Mailing List Third Party Advisory |
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.7 | Release Notes Vendor Advisory |
https://git.kernel.org/linus/8891adc61dce2a8a41fc0c23262b681c3ec4b73a | Issue Tracking Patch Vendor Advisory |
https://git.kernel.org/linus/9fa2dd946743ae6f30dc4830da19147bf100a7f2 | Issue Tracking Patch Vendor Advisory |
https://security.netapp.com/advisory/ntap-20201001-0003/ | Third Party Advisory |
https://www.openwall.com/lists/oss-security/2020/09/08/4 | Mailing List Patch Third Party Advisory |
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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History
No history.
Information
Published : 2020-09-10 14:15
Updated : 2024-02-28 17:47
NVD link : CVE-2020-25221
Mitre link : CVE-2020-25221
CVE.ORG link : CVE-2020-25221
JSON object : View
Products Affected
netapp
- cloud_backup
- hci_compute_node
- solidfire_baseboard_management_controller
- solidfire_\&_hci_management_node
- solidfire\,_enterprise_sds_\&_hci_storage_node
linux
- linux_kernel
CWE
CWE-672
Operation on a Resource after Expiration or Release