What’s Vulnerable › Vulnerabilities

CVE-2019-25044

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-05-14 · updated 2026-06-17
• Weakness: CWE-416

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.

Affected products

• Linux kernel: 5.2-rc3
• NetApp Cloud Backup: all versions
• NetApp H300E Firmware: all versions
• NetApp H300S Firmware: all versions
• NetApp H410C Firmware: all versions
• NetApp H410S Firmware: all versions
• NetApp H500E Firmware: all versions
• NetApp H500S Firmware: all versions
• NetApp H700E Firmware: all versions
• NetApp H700S Firmware: all versions
• NetApp Solidfire & Hci Management Node: all versions
• NetApp Solidfire Baseboard Management Controller Firmware: all versions

References

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

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