CVEvulnerability
CVE-2020-25221
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-09-10
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C
- Weaknesses
- CWE-672
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 configurations
• linux linux kernel (>= 5.7.0 < 5.8.7)
• netapp cloud backup
• netapp solidfire\, enterprise sds \& hci storage node
• netapp solidfire \& hci management node
• netapp hci compute node
• netapp solidfire baseboard management controller
Related
Weakness · CWE (1)
- CWE-672 Operation on a Resource after Expiration or Release weakness
References
- 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
- 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