CVE-2022-2984 in SC9863A
Summary
by MITRE • 10/14/2022
In jpg driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local denial of service in kernel.
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Analysis
by VulDB Data Team • 05/28/2026
The vulnerability identified as CVE-2022-2984 resides within the jpg driver component of a system's kernel space, representing a critical security flaw that could be exploited to disrupt system operations. This issue manifests as a potential out of bounds write condition that occurs due to the absence of proper bounds checking mechanisms within the driver's code implementation. The jpg driver, which is responsible for processing jpeg image files, fails to validate the boundaries of memory operations when handling user-supplied data, creating an avenue for malicious actors to manipulate memory allocation patterns.
The technical flaw stems from inadequate input validation and memory management practices within the kernel driver's processing logic. When the jpg driver receives jpeg formatted data for processing, it does not properly verify that the data being read falls within expected memory boundaries. This missing bounds check allows for memory writes that extend beyond allocated buffer limits, potentially overwriting adjacent memory regions. The vulnerability is classified under CWE-129 as an insufficient bounds checking issue, which directly relates to improper validation of input data lengths and buffer sizes. The absence of proper boundary verification creates a scenario where maliciously crafted jpeg files could trigger memory corruption during processing.
The operational impact of this vulnerability extends to local denial of service conditions within the kernel space, where successful exploitation could cause system instability or complete system crashes. When an out of bounds write occurs in kernel mode, the consequences can be severe as it may corrupt critical kernel data structures, leading to system hangs, unexpected reboots, or complete system failure. The local nature of this vulnerability means that an attacker would need to have access to the system to exploit it, typically requiring user-level privileges or kernel-level access. However, the impact remains significant as kernel-level denial of service attacks can effectively compromise system availability and stability.
From an attack perspective, this vulnerability aligns with ATT&CK technique T1499.004 which covers "Domain or File System Permissions Modification" and potentially T1059.001 for "Command and Scripting Interpreter" if exploitation involves executing malicious code through compromised processes. The vulnerability could be exploited by an attacker who gains local access to a system, potentially through social engineering, privilege escalation, or other initial compromise methods. Once exploited, the out of bounds write could corrupt kernel memory structures, leading to system crashes or allowing for further privilege escalation attempts. The nature of kernel-level vulnerabilities makes them particularly dangerous as they can provide attackers with persistent access to system resources and potentially enable more sophisticated attacks.
Mitigation strategies for CVE-2022-2984 should focus on implementing proper bounds checking mechanisms within the jpg driver code and ensuring that all input data is validated against expected buffer sizes before processing. System administrators should apply available patches or updates from the vendor that address the specific bounds checking deficiencies in the driver implementation. Additionally, implementing kernel memory protection mechanisms such as stack canaries, address space layout randomization, and kernel address space protection can provide additional layers of defense against exploitation attempts. Regular security assessments and code reviews should be conducted to identify similar bounds checking vulnerabilities in other kernel drivers and system components. The fix should ensure that all memory operations within the jpg driver include proper boundary validation, preventing any writes that would exceed allocated buffer limits and maintaining system stability and security.