CVE-2026-24085 Memory Corruption Vulnerability in Display Command Line Processing

CVE-2026-24085 is a memory corruption vulnerability that stems from the improper initialization of a variable during the processing of display command line information. This flaw can lead to a stack-based buffer overflow (CWE-121). The vulnerability was reported by Qualcomm and has a CVSS v3.1 score of 7.2, indicating a high severity. Successful exploitation of this vulnerability could allow an attacker with high privileges and physical access to the device to execute arbitrary code. This is a potential security issue that could affect devices using Qualcomm chipsets.

Attack Chain

1. Attacker gains privileged access to the target device.
2. Attacker crafts a malicious display command line with a payload exceeding the buffer size.
3. The device processes the malicious display command line, triggering the vulnerable code path.
4. Due to improper initialization of a variable, a buffer overflow occurs on the stack.
5. The attacker overwrites critical data on the stack, such as return addresses or function pointers.
6. When the affected function returns, control is redirected to the attacker-controlled address.
7. The attacker executes arbitrary code on the device.
8. The attacker can potentially gain complete control of the affected device, depending on the initial level of access.

Impact

Successful exploitation of CVE-2026-24085 could allow an attacker with high privileges and physical access to the device to execute arbitrary code. The impact includes potential data theft, system compromise, and the ability to install persistent malware. Given the nature of the vulnerability and the privileges required for exploitation, the most likely impact is on development or testing devices used by privileged users.

Recommendation

• Monitor process creation events for unusual command-line arguments related to display configurations, as this could indicate an attempted exploitation of CVE-2026-24085.
• Deploy the provided Sigma rule to detect potential exploitation attempts by monitoring for stack-based buffer overflows (CWE-121) during the processing of display command line information.
• Apply the patch or mitigation provided by Qualcomm as detailed in their June 2026 security bulletin to remediate CVE-2026-24085. The advisory is referenced in this brief.