CVE-2023-1194

Advisory lineage Upstream: 0 Downstream: 4
Analyzed
Published: 03 Nov 2023, 07:41
Last modified:13 Feb 2025, 16:39

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
8.1 HIGH
v3.1 (nvd)
EPSS Score
0.09% LOW
0% probability +0.04%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

03 Nov 2023, 07:41
Published
Vulnerability first disclosed
13 Feb 2025, 16:39
Last Modified
Vulnerability information updated

Description

An out-of-bounds (OOB) memory read flaw was found in parse_lease_state in the KSMBD implementation of the in-kernel samba server and CIFS in the Linux kernel. When an attacker sends the CREATE command with a malformed payload to KSMBD, due to a missing check of `NameOffset` in the `parse_lease_state()` function, the `create_context` object can access invalid memory.

CVSS Metrics

  • v3.1•HIGH•Score: 7.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
  • v3.1•HIGH•Score: 8.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

EPSS Trends

Current EPSS score: 0.09%• Percentile: 25%

Techniques & Countermeasures

  • CWE-125•Out-of-bounds Read

    The product reads data past the end, or before the beginning, of the intended buffer.

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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

  • linux•linux_kernel

    ≥ 5.15, < 5.15.145 | ≥ 5.16, < 6.1.34 | ≥ 6.2, < 6.3.8 | 6.4:rc1 | 6.4:rc2 | 6.4:rc3 | 6.4:rc4 | 6.4:rc5

References (4)