CVE-2023-7324 in Linux
Summary
by MITRE • 10/29/2025
In the Linux kernel, the following vulnerability has been resolved:
scsi: ses: Fix possible addl_desc_ptr out-of-bounds accesses
Sanitize possible addl_desc_ptr out-of-bounds accesses in ses_enclosure_data_process().
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Analysis
by VulDB Data Team • 02/12/2026
The vulnerability identified as CVE-2023-7324 resides within the Linux kernel's SCSI subsystem, specifically affecting the SES (SCSI Enclosure Services) implementation. This flaw manifests in the ses_enclosure_data_process() function where improper handling of additional descriptor pointers can lead to out-of-bounds memory access violations. The issue represents a critical security concern as it potentially allows malicious actors to exploit memory corruption patterns that could result in system instability or privilege escalation. The vulnerability stems from insufficient bounds checking when processing enclosure data structures, particularly in how the system handles additional descriptor pointers that are part of the SCSI enclosure services protocol.
The technical implementation flaw occurs when the ses_enclosure_data_process() function processes enclosure management data structures without adequate validation of pointer boundaries. This function is responsible for parsing and interpreting additional descriptor information within SCSI enclosure services responses, which contain metadata about storage enclosure components including fans, power supplies, and temperature sensors. When processing these descriptors, the kernel fails to properly validate the pointer arithmetic or bounds checking, allowing for potential buffer overflows or out-of-bounds memory reads that could be exploited by attackers with access to the SCSI subsystem. This type of vulnerability aligns with CWE-129, which specifically addresses improper validation of the lower or upper bounds of a buffer, and represents a classic example of an out-of-bounds access pattern that can lead to arbitrary code execution.
The operational impact of this vulnerability extends beyond simple memory corruption as it affects the stability and security of Linux systems that utilize SCSI storage infrastructure. Systems running affected kernel versions may experience kernel panics, system crashes, or potentially allow privilege escalation attacks when maliciously crafted SCSI enclosure responses are processed. The vulnerability is particularly concerning in enterprise environments where SCSI storage arrays are commonly deployed, as these systems often operate with elevated privileges and may be targets for sophisticated attacks. Additionally, the vulnerability could be exploited in combination with other attack vectors to compromise system integrity, making it a significant concern for security-conscious organizations. The issue affects various Linux distributions that include kernel versions containing the vulnerable ses_enclosure_data_process() implementation.
Mitigation strategies for CVE-2023-7324 primarily focus on applying the appropriate kernel security patches that address the bounds checking deficiencies in the SES subsystem. System administrators should prioritize updating their Linux kernel installations to versions that include the fix for this vulnerability, which typically involves implementing proper bounds validation for additional descriptor pointer calculations. Organizations should also consider implementing additional monitoring and logging mechanisms to detect potential exploitation attempts, particularly in environments where SCSI storage systems are actively used. The ATT&CK framework categorizes this type of vulnerability under T1059.001 (Command and Scripting Interpreter: PowerShell) and T1068 (Exploitation for Privilege Escalation) when considering how attackers might leverage such memory corruption flaws. Network segmentation and limiting access to SCSI subsystem interfaces can provide additional defense-in-depth measures, though the primary remediation remains kernel patching. Regular security assessments and vulnerability scanning should be conducted to ensure that systems remain protected against similar out-of-bounds access vulnerabilities that may exist in other kernel subsystems.