Vulnerabilities > CVE-2023-2008 - Improper Validation of Array Index vulnerability in Linux Kernel
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
A flaw was found in the Linux kernel's udmabuf device driver. The specific flaw exists within a fault handler. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an array. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Overflow Buffers Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2186862
- https://github.com/torvalds/linux/commit/05b252cccb2e5c3f56119d25de684b4f810ba4
- https://security.netapp.com/advisory/ntap-20230517-0007/
- https://www.zerodayinitiative.com/advisories/ZDI-23-441/
- https://bugzilla.redhat.com/show_bug.cgi?id=2186862
- https://www.zerodayinitiative.com/advisories/ZDI-23-441/
- https://security.netapp.com/advisory/ntap-20230517-0007/
- https://github.com/torvalds/linux/commit/05b252cccb2e5c3f56119d25de684b4f810ba4