High severity7.8NVD Advisory· Published May 14, 2021· Updated Jun 17, 2026
CVE-2019-25044
CVE-2019-25044
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.
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Affected products
2- Linux/Linux kerneldescription
Patches
Vulnerability mechanics
References
5- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2nvdPatchVendor Advisory
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/nvdMailing ListPatchVendor Advisory
- syzkaller.appspot.com/bugnvdExploitThird Party Advisory
- security.netapp.com/advisory/ntap-20210629-0006/nvdThird Party Advisory
- sites.google.com/view/syzscope/kasan-use-after-free-read-in-blk_mq_free_rqsnvdThird Party Advisory
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