CVE-2019-25044

Name: CVE-2019-25044
Creator: NVD / NIST
Published: 2021-05-14T23:15:07.507+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.65%

Last modified Jun 17, 2026

CVE-2019-25044 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. The block subsystem in the Linux kernel before 5.2 has a use-after-free that can lead to arbitrary code execution in the kernel context and privilege escalation, aka CID-c3e2219216c9. This is related to blk_mq_free_rqs and blk_cleanup_queue.. EPSS estimates a 0.65% chance of exploitation in the next 30 days.

Description

The block subsystem in the Linux kernel before 5.2 has a use-after-free that can lead to arbitrary code execution in the kernel context and privilege escalation, aka CID-c3e2219216c9. This is related to blk_mq_free_rqs and blk_cleanup_queue.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.65%

46.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	5.2	Rc3
Netapp	Cloud Backup	All versions	—
Netapp	Solidfire \& Hci Management Node	All versions	—
Netapp	Solidfire Baseboard Management Controller Firmware	All versions	—
Netapp	H300s Firmware	All versions	—
Netapp	H500s Firmware	All versions	—
Netapp	H700s Firmware	All versions	—
Netapp	H300e Firmware	All versions	—
Netapp	H500e Firmware	All versions	—
Netapp	H700e Firmware	All versions	—
Netapp	H410s Firmware	All versions	—
Netapp	H410c Firmware	All versions	—

References

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2Patch, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c3e2219216c92919a6bd1711f340f5faa98695e6Mailing List, Patch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210629-0006/Third Party Advisory
https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-blk_mq_free_rqsThird Party Advisory
https://syzkaller.appspot.com/bug?id=36fe241584203cf394d44560a42e3430434f1213Exploit, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2Patch, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c3e2219216c92919a6bd1711f340f5faa98695e6Mailing List, Patch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210629-0006/Third Party Advisory
https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-blk_mq_free_rqsThird Party Advisory
https://syzkaller.appspot.com/bug?id=36fe241584203cf394d44560a42e3430434f1213Exploit, Third Party Advisory

Timeline

Published: May 14, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-25044?

How severe is CVE-2019-25044?

CVE-2019-25044 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.65% probability of exploitation in the next 30 days.

How do I fix CVE-2019-25044?

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-2019-25044?

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

Scan your code now

Source: NVD / NIST