CVE-2023-4389

Kernel: btrfs: double free in btrfs_get_root_ref()

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.

Category

7.0
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.02%
Vendor Advisory kernel.org
Affected: n/a Kernel
Affected: Red Hat Red Hat Enterprise Linux 6
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Fedora Fedora
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/security/cve/CVE-2023-4389 third party advisory vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2219271 third party advisory issue tracking
https://patchwork.kernel.org/project/linux-btrfs/patch/20220324134454.15192-1-baijiaju1990@gmail.com/ patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-4389?
CVE-2023-4389 has been scored as a high severity vulnerability.
How to fix CVE-2023-4389?
To fix CVE-2023-4389, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-4389 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-4389 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-4389?
CVE-2023-4389 affects n/a Kernel, Red Hat Red Hat Enterprise Linux 6, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 9, Fedora Fedora.
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