CVE-2019-25044

HighCVSS 7.8/10Last modified Jun 17, 2026

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 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

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
NVD status: Modified

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