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CVE-2020-25221

Published: Sep 10, 2020Updated: Nov 21, 2024 Sources: CVE List NVDCWE-672
7.8HIGH
NVD MITRE
EPSS Score
0.7%
Top 52.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-672

Affected Products

netapp
commercial·US
cloud backup
Hardware Firmware
solidfire\, enterprise sds \& hci storage node
Hardware Firmware
solidfire \& hci management node
Hardware Firmware
hci compute node
Hardware Firmware
solidfire baseboard management controller
Hardware Firmware
linux
oss-projectaka the linux kernel
linux kernelOn-premOS
Operating Systems
and 1 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2020-25221?We can run the check for you — a free external exposure review, no install. Check my exposure

References

https://www.openwall.com/lists/oss-security/2020/09/08/4
openwall.com
https://git.kernel.org/linus/9fa2dd946743ae6f30dc4830da19147bf100a7f2
git.kernel.org
https://git.kernel.org/linus/8891adc61dce2a8a41fc0c23262b681c3ec4b73a
git.kernel.org
and 3 more references View all →
News mentions
Could not load news mentions.

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