Vulnerability Description
In the Linux kernel 5.0.21 and 5.3.11, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in try_merge_free_space in fs/btrfs/free-space-cache.c because the pointer to a left data structure can be the same as the pointer to a right data structure.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.31, < 4.4.233 |
| Debian | Debian Linux | 9.0 |
| Canonical | Ubuntu Linux | 14.04 |
| Netapp | Active Iq Unified Manager | - |
| Netapp | Cloud Backup | - |
| Netapp | Data Availability Services | - |
| Netapp | Hci Management Node | - |
| Netapp | Solidfire | - |
| Netapp | Steelstore Cloud Integrated Storage | - |
| Netapp | A700S Firmware | - |
| Netapp | A700S | - |
| Netapp | Fas 8300 Firmware | - |
| Netapp | Fas 8300 | - |
| Netapp | Fas 8700 Firmware | - |
| Netapp | Fas 8700 | - |
| Netapp | Fas A400 Firmware | - |
| Netapp | Fas A400 | - |
| Netapp | Aff 8300 Firmware | - |
| Netapp | Aff 8300 | - |
| Netapp | Aff 8700 Firmware | - |
Related Weaknesses (CWE)
References
- https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19448ExploitThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/09/msg00025.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00032.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00034.htmlMailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20200103-0001/Third Party Advisory
- https://usn.ubuntu.com/4578-1/Third Party Advisory
- https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19448ExploitThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/09/msg00025.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00032.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00034.htmlMailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20200103-0001/Third Party Advisory
- https://usn.ubuntu.com/4578-1/Third Party Advisory
FAQ
What is CVE-2019-19448?
CVE-2019-19448 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel 5.0.21 and 5.3.11, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in try_merge_free_space ...
How severe is CVE-2019-19448?
CVE-2019-19448 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-19448?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux, Canonical Ubuntu Linux, Netapp Active Iq Unified Manager, Netapp Cloud Backup.