Home/CVE/The block subsystem in the Linux kernel before 5.2 has a use-after-free that can lead to arbitrary code execution in the
CVE

CVE-2019-25044

The block subsystem in the Linux kernel before 5.2 has a use-after-free that can lead to arbitrary code execution in the

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.

HIGH · CVSS 7.8 EPSS 0.00133
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
▤

Affected Products & Versions

12
linux kernelall versions
netapp cloud backupall versions
netapp solidfire \& hci management nodeall versions
netapp solidfire baseboard management controller firmwareall versions
netapp h300s firmwareall versions
netapp h500s firmwareall versions
netapp h700s firmwareall versions
netapp h300e firmwareall versions
⚠

Public Exploits & PoCs

1
pocsyzkaller.appspot.com · bug?id=36fe241584203cf394d44560a42e3430434f1213syzkaller.appspot.com
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 May 2021 · 11:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2PatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c3e2219216c92919a6bd1711f340f5faa98695e6Mailing ListPatchVendor 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
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