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CVE-2016-5195

HIGHCVSS 7/10Actively ExploitedEPSS 83.52%

Last modified

CVE-2016-5195 is a high-severity vulnerability rated 7/10 on the CVSS scale. Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect handling of a copy-on-write (COW) feature to write to a read-only memory mapping, as exploited in the wild in October 2016, aka "Dirty COW.". CISA has confirmed active exploitation in the wild. EPSS estimates a 83.52% chance of exploitation in the next 30 days.

Description

Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect handling of a copy-on-write (COW) feature to write to a read-only memory mapping, as exploited in the wild in October 2016, aka "Dirty COW."

Metrics

CVSS 3.1
7/10

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
83.52%

99.6th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .

Weakness Enumeration

Affected Software

VendorProductVersions
CanonicalUbuntu Linux12.04
CanonicalUbuntu Linux14.04
CanonicalUbuntu Linux16.04
CanonicalUbuntu Linux16.10
LinuxLinux Kernel>= 2.6.22, < 3.2.83
LinuxLinux Kernel>= 3.3, < 3.4.113
LinuxLinux Kernel>= 3.5, < 3.10.104
LinuxLinux Kernel>= 3.11, < 3.12.66
LinuxLinux Kernel>= 3.13, < 3.16.38
LinuxLinux Kernel>= 3.17, < 3.18.44
LinuxLinux Kernel>= 3.19, < 4.1.35
LinuxLinux Kernel>= 4.2, < 4.4.26
LinuxLinux Kernel>= 4.5, < 4.7.9
LinuxLinux Kernel>= 4.8, < 4.8.3
RedhatEnterprise Linux5
RedhatEnterprise Linux6.0
RedhatEnterprise Linux7.0
RedhatEnterprise Linux Aus6.2
RedhatEnterprise Linux Aus6.4
RedhatEnterprise Linux Aus6.5
RedhatEnterprise Linux Eus6.6
RedhatEnterprise Linux Eus6.7
RedhatEnterprise Linux Eus7.1
RedhatEnterprise Linux Long Life5.6
RedhatEnterprise Linux Long Life5.9
RedhatEnterprise Linux Tus6.5
DebianDebian Linux7.0
DebianDebian Linux8.0
FedoraprojectFedora23
FedoraprojectFedora24
FedoraprojectFedora25
PaloaltonetworksPan-Os>= 5.1, < 7.0.14
PaloaltonetworksPan-Os>= 7.1.0, < 7.1.8
NetappCloud BackupAll versions
NetappHci Storage NodesAll versions
NetappOncommand BalanceAll versions
NetappOncommand Performance ManagerAll versions
NetappOncommand Unified Manager For Clustered Data OntapAll versions
NetappOntap Select Deploy Administration UtilityAll versions
NetappSnapprotectAll versions
NetappSolidfireAll versions

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2016-5195?
Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect handling of a copy-on-write (COW) feature to write to a read-only memory mapping, as exploited in the wild in October 2016, aka "Dirty COW."
How severe is CVE-2016-5195?
CVE-2016-5195 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 83.52% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.
How do I fix CVE-2016-5195?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST