CVE-2019-25044
HIGHLinux Kernel < 5.2 - Use-After-Free in Block Subsystem
Title source: llmDescription
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.
References (5)
Core 5
Core References
Patch, Vendor Advisory x_refsource_misc
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2
Third Party Advisory x_refsource_misc
https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-blk_mq_free_rqs
Exploit, Third Party Advisory x_refsource_misc
https://syzkaller.appspot.com/bug?id=36fe241584203cf394d44560a42e3430434f1213
Mailing List, Patch, Vendor Advisory x_refsource_misc
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c3e2219216c92919a6bd1711f340f5faa98695e6
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210629-0006/
Scores
CVSS v3
7.8
EPSS
0.0013
EPSS Percentile
32.4%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-416
Status
published
Products (12)
linux/linux_kernel
5.2 rc3
netapp/cloud_backup
netapp/h300e_firmware
netapp/h300s_firmware
netapp/h410c_firmware
netapp/h410s_firmware
netapp/h500e_firmware
netapp/h500s_firmware
netapp/h700e_firmware
netapp/h700s_firmware
... and 2 more
Published
May 14, 2021
Tracked Since
Feb 18, 2026