Kernel: btrfs: double free in btrfs_get_root_ref()
CVE-2023-4389

7HIGH

Key Information:

Vendor

Red Hat
Status
Kernel
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
16 August 2023

What is CVE-2023-4389?

A flaw in the btrfs_get_root_ref function within the btrfs filesystem of the Linux Kernel leads to a double decrement of the reference count. This vulnerability enables a local attacker with user privileges to potentially crash the system or gain unauthorized access to sensitive internal kernel information.

Affected Version(s)

Kernel 5.18-rc3

References

https://access.redhat.com/security/cve/CVE-2023-4389
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2219271
issue-trackingx_refsource_REDHAT
https://patchwork.kernel.org/project/linux-btrfs/patch/20...

CVSS V3.1

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.