CVE-2024-23307 in Linux
Summary
by MITRE • 01/25/2024
Integer Overflow or Wraparound vulnerability in Linux Linux kernel kernel on Linux, x86, ARM (md, raid, raid5 modules) allows Forced Integer Overflow.
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Analysis
by VulDB Data Team • 01/23/2025
The CVE-2024-23307 vulnerability represents a critical integer overflow or wraparound flaw within the Linux kernel's mdraid subsystem, specifically affecting x86 and ARM architectures. This vulnerability resides in the md (multiple devices) and raid5 kernel modules, which are fundamental components responsible for managing software RAID configurations and disk array operations. The flaw manifests when the kernel processes certain data structures or calculations involving integer values that exceed their maximum representable range, causing the values to wrap around to negative or unexpected positive values. This type of vulnerability falls under CWE-190, which specifically addresses integer overflow conditions that can lead to unpredictable behavior and potential exploitation. The vulnerability is particularly concerning because it affects core storage management functionality that is widely deployed across enterprise and consumer systems.
The technical exploitation of this vulnerability occurs when the kernel's mdraid subsystem processes array configurations or performs calculations related to disk sector addresses, stripe sizes, or array metadata that involve integer arithmetic operations. When these calculations exceed the maximum value that can be represented by the integer type used, the overflow causes the value to wrap around, potentially leading to buffer overflows, memory corruption, or incorrect data handling. The forced integer overflow aspect indicates that an attacker can manipulate input parameters to deliberately trigger this condition, making it particularly dangerous for systems running kernel versions that have not been patched. The vulnerability affects multiple kernel versions and architectures, with the x86 and ARM platforms being the primary targets due to their widespread use in servers and embedded systems. This type of flaw can be categorized under ATT&CK technique T1068, which involves exploiting local privileges to gain unauthorized access or escalate privileges within the system.
The operational impact of CVE-2024-23307 extends beyond simple system instability, as it can potentially allow local privilege escalation or denial of service conditions that compromise the integrity of storage systems. Systems utilizing software RAID configurations, particularly those running on Linux distributions with affected kernel versions, are at risk of experiencing unexpected behavior during RAID operations, array rebuilds, or disk management activities. The vulnerability may enable an attacker with local access to potentially escalate privileges or cause system crashes that could lead to data loss or service disruption. Organizations relying on Linux-based storage solutions, including servers, database systems, and enterprise infrastructure, must urgently assess their kernel versions and apply appropriate patches to mitigate this risk. The affected md and raid5 modules are commonly used in production environments, making this vulnerability particularly significant for system administrators and security teams responsible for maintaining operational continuity and data integrity. Additionally, the vulnerability's presence in widely-used kernel components means that exploitation could affect a broad range of systems, from small embedded devices to large enterprise servers, amplifying its potential impact across different deployment scenarios and threat landscapes.