Vulnerability Description
A flaw was found in btrfs_get_root_ref in fs/btrfs/disk-io.c in the btrfs filesystem in the Linux Kernel due to a double decrement of the reference count. This issue may allow a local attacker with user privilege to crash the system or may lead to leaked internal kernel information.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.7, < 5.10.112 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/security/cve/CVE-2023-4389Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2219271Issue TrackingThird Party Advisory
- https://patchwork.kernel.org/project/linux-btrfs/patch/20220324134454.15192-1-baPatchVendor Advisory
- https://access.redhat.com/security/cve/CVE-2023-4389Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2219271Issue TrackingThird Party Advisory
- https://patchwork.kernel.org/project/linux-btrfs/patch/20220324134454.15192-1-baPatchVendor Advisory
FAQ
What is CVE-2023-4389?
CVE-2023-4389 is a vulnerability with a CVSS score of 7.0 (HIGH). A flaw was found in btrfs_get_root_ref in fs/btrfs/disk-io.c in the btrfs filesystem in the Linux Kernel due to a double decrement of the reference count. This issue may allow a local attacker with us...
How severe is CVE-2023-4389?
CVE-2023-4389 has been rated HIGH with a CVSS base score of 7.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-4389?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.