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.
Published 2023-08-16 19:15:10
Updated 2023-12-22 17:14:53
Source Red Hat, Inc.
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2023-4389

0.04%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-4389

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.1
HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
1.8
5.2
NIST
7.0
HIGH CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
1.0
5.9
Red Hat, Inc.

CWE ids for CVE-2023-4389

  • The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.
    Assigned by:
    • nvd@nist.gov (Primary)
    • secalert@redhat.com (Secondary)
  • Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2023-4389

Products affected by CVE-2023-4389

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