Out-of-bounds Read in Linux Kernel
CVE-2023-4458
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.
Vulnerability class: Buffer Overflow
EPSS: 0.008 (53.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N.
Affected products
Weakness classification (CWE)
References
- patrick@puiterwijk.org (x_refsource_REDHAT, vdb-entry, Vendor Advisory)
- patrick@puiterwijk.org (x_refsource_REDHAT, issue-tracking, Issue Tracking, Vendor Advisory)
- patrick@puiterwijk.org (Third Party Advisory)
Frequently asked questions
- What is CVE-2023-4458?
- CVE-2023-4458 is a medium-severity vulnerability in Linux Kernel, classified under Out-of-bounds Read. CVSS score: 4.0/10. Published 2024-11-14.
- How severe is CVE-2023-4458?
- Medium severity. CVSS v3 base score is 4.0 out of 10.