CVE-2025-47330 Overview
CVE-2025-47330 is a Denial of Service vulnerability affecting Qualcomm components that occurs during the parsing of video packets received from video firmware. The vulnerability is classified as a buffer over-read (CWE-126), where the software reads beyond the boundary of an allocated memory buffer. This can lead to a transient denial of service condition when processing malformed or crafted video packets.
Critical Impact
A local attacker with low privileges can exploit this vulnerability to cause a temporary denial of service condition by triggering an out-of-bounds read during video packet processing.
Affected Products
- Qualcomm chipsets with video firmware components
- Devices using affected Qualcomm video processing subsystems
- Systems with vulnerable video packet parsing implementations
Discovery Timeline
- 2026-01-07 - CVE CVE-2025-47330 published to NVD
- 2026-01-08 - Last updated in NVD database
Technical Details for CVE-2025-47330
Vulnerability Analysis
This vulnerability stems from improper bounds checking during the parsing of video packets received from video firmware. The underlying issue is a buffer over-read condition (CWE-126), where the video packet parser reads data beyond the bounds of an allocated buffer. This type of vulnerability can occur when the parser trusts packet-supplied length fields without proper validation, or when offset calculations fail to account for buffer boundaries.
The local attack vector indicates that exploitation requires local access to the affected system, and the low privilege requirement suggests that a standard user account may be sufficient to trigger the vulnerability. While this vulnerability does not directly impact data confidentiality or integrity, it can completely disrupt the availability of the video processing subsystem.
Root Cause
The root cause is a buffer over-read (CWE-126) in the video packet parsing logic. When the video firmware sends packets to be processed, the parsing routine fails to properly validate the boundaries of the data being read. This allows an attacker to craft malicious input that causes the parser to read beyond the allocated buffer, resulting in a denial of service condition.
The vulnerability exists in the interaction between the video firmware and the system's video packet processing components. Insufficient validation of packet structure and length fields allows the over-read condition to manifest during normal parsing operations.
Attack Vector
The attack requires local access to the system. An attacker with low-level privileges can exploit this vulnerability by:
- Gaining local access to a device with the vulnerable Qualcomm video processing component
- Crafting or injecting malformed video packets that trigger the parsing routine
- Causing the parser to read beyond buffer boundaries, leading to a transient denial of service
The attack does not require user interaction and can be triggered programmatically once local access is achieved. The transient nature of the DoS suggests that the system may recover after the attack, but repeated exploitation could cause sustained service disruption.
Detection Methods for CVE-2025-47330
Indicators of Compromise
- Unexpected video subsystem crashes or restarts on affected devices
- Kernel or system logs showing out-of-bounds memory access errors in video processing components
- Abnormal video packet processing failures or timeouts
- System stability issues coinciding with video playback or camera operations
Detection Strategies
- Monitor system logs for memory access violations or buffer over-read errors in video-related kernel modules
- Implement anomaly detection for video subsystem crash patterns that may indicate exploitation attempts
- Deploy endpoint detection solutions capable of monitoring low-level system behavior around video firmware interactions
- Review crash dumps for stack traces pointing to video packet parsing routines
Monitoring Recommendations
- Enable verbose logging for video firmware and kernel video subsystem components
- Configure alerts for repeated video subsystem failures or crashes
- Monitor for applications attempting unusual access patterns to video processing interfaces
- Implement baseline monitoring of video subsystem stability metrics to detect deviations
How to Mitigate CVE-2025-47330
Immediate Actions Required
- Review the Qualcomm January 2026 Security Bulletin for affected product lists and available patches
- Apply vendor-provided firmware and driver updates as they become available
- Limit local access to affected systems to trusted users where possible
- Monitor systems for signs of exploitation while awaiting patches
Patch Information
Qualcomm has addressed this vulnerability in their January 2026 Security Bulletin. Organizations should consult the Qualcomm January 2026 Security Bulletin for detailed patch information, affected chipset lists, and remediation guidance. Device manufacturers and OEMs should integrate the security patches into their firmware update processes and distribute updates to end users.
Workarounds
- Restrict local access to affected devices to minimize the attack surface
- Implement access controls to limit which applications can interact with video processing subsystems
- Consider disabling or limiting video processing functionality on critical systems where DoS would be unacceptable, pending patch application
- Deploy SentinelOne Singularity Platform for enhanced monitoring and protection of endpoints against exploitation attempts
# Configuration example - Monitor video subsystem logs for anomalies
# Enable verbose logging for video-related kernel modules (Linux example)
echo "module video_firmware +p" > /sys/kernel/debug/dynamic_debug/control
# Check system logs for video subsystem errors
dmesg | grep -i "video\|media\|v4l2" | grep -i "error\|fault\|oob"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
