CVE-2019-19377
HIGHCVSS 7.8/10EPSS 3.40%
Last modified
CVE-2019-19377 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and unmounting can lead to a use-after-free in btrfs_queue_work in fs/btrfs/async-thread.c.. EPSS estimates a 3.40% chance of exploitation in the next 30 days.
Description
In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and unmounting can lead to a use-after-free in btrfs_queue_work in fs/btrfs/async-thread.c.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.12, < 4.19.156 |
| Linux | Linux Kernel | >= 4.20, < 5.4.33 |
| Linux | Linux Kernel | >= 5.5.0, < 5.5.18 |
| Linux | Linux Kernel | >= 5.6, < 5.6.5 |
| Netapp | Active Iq Unified Manager | All versions |
| Netapp | Cloud Backup | All versions |
| Netapp | Steelstore Cloud Integrated Storage | All versions |
| Netapp | Solidfire Baseboard Management Controller | All versions |
References
- https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19377Exploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200103-0001/Third Party Advisory, VDB Entry
- https://usn.ubuntu.com/4367-1/Third Party Advisory
- https://usn.ubuntu.com/4369-1/Third Party Advisory
- https://usn.ubuntu.com/4414-1/Third Party Advisory
- https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19377Exploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200103-0001/Third Party Advisory, VDB Entry
- https://usn.ubuntu.com/4367-1/Third Party Advisory
- https://usn.ubuntu.com/4369-1/Third Party Advisory
- https://usn.ubuntu.com/4414-1/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-19377?
In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and unmounting can lead to a use-after-free in btrfs_queue_work in fs/btrfs/async-thread.c.
How severe is CVE-2019-19377?
CVE-2019-19377 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 3.40% probability of exploitation in the next 30 days.
How do I fix CVE-2019-19377?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2019-19377?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST