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CVE-2019-9213

MEDIUMCVSS 5.5/10EPSS 5.67%

Last modified

CVE-2019-9213 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. In the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks a check for the mmap minimum address, which makes it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task.. EPSS estimates a 5.67% chance of exploitation in the next 30 days.

Description

In the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks a check for the mmap minimum address, which makes it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task.

Metrics

CVSS 3.1
5.5/10

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

EPSS Probability
5.67%

92.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinuxLinux Kernel>= 4.9, < 4.9.162
LinuxLinux Kernel>= 4.14, < 4.14.105
LinuxLinux Kernel>= 4.19, < 4.19.27
LinuxLinux Kernel>= 4.20, < 4.20.14
DebianDebian Linux8.0
RedhatEnterprise Linux7.0
RedhatEnterprise Linux8.0
OpensuseLeap15.0
OpensuseLeap42.3
CanonicalUbuntu Linux12.04
CanonicalUbuntu Linux14.04
CanonicalUbuntu Linux16.04
CanonicalUbuntu Linux18.10

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-9213?
In the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks a check for the mmap minimum address, which makes it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task.
How severe is CVE-2019-9213?
CVE-2019-9213 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 5.67% probability of exploitation in the next 30 days.
How do I fix CVE-2019-9213?
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.

Are you affected by CVE-2019-9213?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST