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CVE-2019-19768

HIGHCVSS 7.5/10EPSS 4.15%

Last modified

CVE-2019-19768 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the __blk_add_trace function in kernel/trace/blktrace.c (which is used to fill out a blk_io_trace structure and place it in a per-cpu sub-buffer).. EPSS estimates a 4.15% chance of exploitation in the next 30 days.

Description

In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the __blk_add_trace function in kernel/trace/blktrace.c (which is used to fill out a blk_io_trace structure and place it in a per-cpu sub-buffer).

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
4.15%

89.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinuxLinux Kernel5.4.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-19768?
In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the __blk_add_trace function in kernel/trace/blktrace.c (which is used to fill out a blk_io_trace structure and place it in a per-cpu sub-buffer).
How severe is CVE-2019-19768?
CVE-2019-19768 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 4.15% probability of exploitation in the next 30 days.
How do I fix CVE-2019-19768?
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-2019-19768?

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

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Source: NVD / NIST