Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 6.6 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/security/cve/CVE-2023-4458Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2325516Issue TrackingVendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-24-590/Third Party Advisory
FAQ
What is CVE-2023-4458?
CVE-2023-4458 is a vulnerability with a CVSS score of 4.0 (MEDIUM). 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 e...
How severe is CVE-2023-4458?
CVE-2023-4458 has been rated MEDIUM with a CVSS base score of 4.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-4458?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.