CVE-2020-25221

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Summary

CVECVE-2020-25221
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-09-10 14:15:00 UTC
Updated2023-02-02 22:23:00 UTC
Descriptionget_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.

Risk And Classification

Problem Types: CWE-672

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All
Operating System Linux Linux Kernel All All All All
Application Netapp Cloud Backup - All All All
Hardware Netapp Hci Compute Node - All All All
Application Netapp Solidfire Enterprise Sds Hci Storage Node - All All All
Hardware Netapp Solidfire Baseboard Management Controller - All All All
Application Netapp Solidfire Hci Management Node - All All All

References

ReferenceSourceLinkTags
CVE-2020-25221 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security CONFIRM security.netapp.com
kernel/git/torvalds/linux.git - Linux kernel source tree MISC git.kernel.org Issue Tracking, Patch, Vendor Advisory
oss-security - CVE Request: Linux kernel vsyscall page refcounting error MISC www.openwall.com Mailing List, Patch, Third Party Advisory
oss-security - Re: CVE Request: Linux kernel vsyscall page refcounting error MLIST www.openwall.com Third Party Advisory
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.7 MISC cdn.kernel.org Release Notes, Vendor Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree MISC git.kernel.org Issue Tracking, Patch, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 180677 Debian Security Update for linux (CVE-2020-25221)

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