CVE-2023-5345

Advisory lineage Upstream: 0 Downstream: 32
Analyzed
Published: 03 Oct 2023, 02:33
Last modified:27 Feb 2025, 20:48

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (cve.org)
EPSS Score
0.03% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

03 Oct 2023, 02:33
Published
Vulnerability first disclosed
27 Feb 2025, 20:48
Last Modified
Vulnerability information updated

Description

A use-after-free vulnerability in the Linux kernel's fs/smb/client component can be exploited to achieve local privilege escalation. In case of an error in smb3_fs_context_parse_param, ctx->password was freed but the field was not set to NULL which could lead to double free. We recommend upgrading past commit e6e43b8aa7cd3c3af686caf0c2e11819a886d705.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.03%• Percentile: 8%

Techniques & Countermeasures

  • CWE-416•Use After Free

    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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • fedoraproject•fedora

    37 | 38 | 39

  • Unknown•Kernel

    ≥ 0.0, < 6.6

  • linux•linux_kernel

    ≥ 6.0.16, < 6.1.56 | ≥ 6.2, < 6.5.6 | 6.6:rc1 | 6.6:rc2 | 6.6:rc3

References (6)