CVE-2019-25044

 

Published at: - 15-05-2021 01:15

Last modified: - 24-01-2023 03:01

Total changes: - 7

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.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c3e2219216c92919a6bd1711f340f5faa98695e6
• https://syzkaller.appspot.com/bug?id=36fe241584203cf394d44560a42e3430434f1213
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2
• https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-blk_mq_free_rqs
• https://security.netapp.com/advisory/ntap-20210629-0006/

 

Keywords

NVD

 

CVE-2019-25044

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures