Red Hat Enterprise Linux 6 vulnerability

What happened

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.

Affected versions

Red Hat Enterprise Linux 6: before 5.15.131; 5.16 through before 6.1.52; 6.2 through before 6.4.15; 6.5 through before 6.5.2 Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

• Apply vendor-provided updates or mitigations.
• Review affected product exposure and access logs.