CVE-2019-19448: Use After Free
First published: Sun Dec 08 2019(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=2.6.31<4.4.233 | |
| Linux Kernel | >=4.5.0<4.9.233 | |
| Linux Kernel | >=4.10<4.14.194 | |
| Linux Kernel | >=4.15<4.19.141 | |
| Linux Kernel | >=4.20<5.4.60 | |
| Linux Kernel | >=5.5.0<5.7.17 | |
| Linux Kernel | >=5.8<5.8.3 | |
| Debian | =9.0 | |
| Ubuntu | =14.04 | |
| Ubuntu | =16.04 | |
| Ubuntu | =18.04 | |
| NetApp Active IQ Unified Manager for VMware vSphere | ||
| NetApp Cloud Backup | ||
| NetApp Data Availability Services | ||
| NetApp SolidFire & HCI Management Node | ||
| NetApp SolidFire & HCI Storage Node | ||
| NetApp SteelStore Cloud Integrated Storage | ||
| NetApp AFF A700s Firmware | ||
| NetApp A700s | ||
| NetApp FAS8300 | ||
| NetApp FAS8300 | ||
| NetApp FAS8700 Firmware | ||
| NetApp FAS8700 | ||
| NetApp FAS A400 | ||
| NetApp FAS A400 | ||
| NetApp AFF 8300 Firmware | ||
| NetApp AFF 8300 | ||
| NetApp AFF 8700 | ||
| NetApp AFF 8700 | ||
| NetApp AFF A400 | ||
| NetApp AFF A400 | ||
| NetApp H610S Firmware | ||
| NetApp H610S Firmware | ||
| NetApp SolidFire Baseboard Management Controller Firmware | ||
| NetApp SolidFire | ||
| All of | ||
| NetApp AFF A700s Firmware | ||
| NetApp A700s | ||
| All of | ||
| NetApp FAS8300 | ||
| NetApp FAS8300 | ||
| All of | ||
| NetApp FAS8700 Firmware | ||
| NetApp FAS8700 | ||
| All of | ||
| NetApp FAS A400 | ||
| NetApp FAS A400 | ||
| All of | ||
| NetApp AFF 8300 Firmware | ||
| NetApp AFF 8300 | ||
| All of | ||
| NetApp AFF 8700 | ||
| NetApp AFF 8700 | ||
| All of | ||
| NetApp AFF A400 | ||
| NetApp AFF A400 | ||
| All of | ||
| NetApp H610S Firmware | ||
| NetApp H610S Firmware | ||
| All of | ||
| NetApp SolidFire Baseboard Management Controller Firmware | ||
| NetApp SolidFire | ||
| debian/linux | 5.10.223-1 5.10.234-1 6.1.123-1 6.1.128-1 6.12.17-1 |
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Reference Links
- https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19448
- https://security.netapp.com/advisory/ntap-20200103-0001/
- https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
- https://usn.ubuntu.com/4578-1/
- https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
- https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
- https://launchpad.net/bugs/cve/CVE-2019-19448
- https://security-tracker.debian.org/tracker/CVE-2019-19448
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19448
- https://nvd.nist.gov/vuln/detail/CVE-2019-19448
- https://ubuntu.com/security/CVE-2019-19448
Frequently Asked Questions
What is the severity of CVE-2019-19448?
CVE-2019-19448 has a moderate severity level due to the potential for data corruption and denial of service.
How do I fix CVE-2019-19448?
To fix CVE-2019-19448, upgrade your Linux kernel to versions 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.119-1, 6.12.10-1, or 6.12.11-1.
What versions of Linux kernel are affected by CVE-2019-19448?
CVE-2019-19448 affects Linux kernel versions 5.0.21 to 5.3.11 and several earlier versions up to 4.19.x.
Is CVE-2019-19448 a local or remote vulnerability?
CVE-2019-19448 is a local vulnerability that requires an attacker to have access to a system where the vulnerable kernel is running.
What type of vulnerability is CVE-2019-19448?
CVE-2019-19448 is a use-after-free vulnerability in the Linux kernel related to the btrfs filesystem.
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- source/NVD
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- vendor/linux
- canonical/linux kernel
- version/linux kernel/2.6.31
- version/linux kernel/4.5.0
- version/linux kernel/4.10
- version/linux kernel/4.15
- version/linux kernel/4.20
- version/linux kernel/5.5.0
- version/linux kernel/5.8
- vendor/debian
- canonical/debian
- version/debian/9.0
- vendor/canonical
- canonical/ubuntu
- version/ubuntu/14.04
- version/ubuntu/16.04
- version/ubuntu/18.04
- vendor/netapp
- canonical/netapp active iq unified manager for vmware vsphere
- canonical/netapp cloud backup
- canonical/netapp data availability services
- canonical/netapp solidfire & hci management node
- canonical/netapp solidfire & hci storage node
- canonical/netapp steelstore cloud integrated storage
- canonical/netapp aff a700s firmware
- canonical/netapp a700s
- canonical/netapp fas8300
- canonical/netapp fas8700 firmware
- canonical/netapp fas8700
- canonical/netapp fas a400
- canonical/netapp aff 8300 firmware
- canonical/netapp aff 8300
- canonical/netapp aff 8700
- canonical/netapp aff a400
- canonical/netapp h610s firmware
- canonical/netapp solidfire baseboard management controller firmware
- canonical/netapp solidfire