CVE-2023-4458

HIGH EPSS 53.0%
Published Nov 14, 20241y ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published Nov 14, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

A flaw was found within the parsing of extended attributes in the kernel ksmbd module. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this to disclose sensitive information on affected installations of Linux. Only systems with ksmbd enabled are vulnerable to this CVE.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
53.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 1

VendorProductVersionRange
linuxlinux_kernel* <6.6

References 3

  • access.redhat.com https://access.redhat.com/security/cve/CVE-2023-4458
    Vendor Advisory
  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2325516
    Issue TrackingVendor Advisory
  • zerodayinitiative.com https://www.zerodayinitiative.com/advisories/ZDI-24-590/
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.