Vulnerability Details : CVE-2023-4389

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

Products affected by CVE-2023-4389

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

EPSS FAQ
0.02%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 2 %
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.
    Assigned by:
    • nvd@nist.gov (Primary)
    • secalert@redhat.com (Secondary)
  • The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2023-4389

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