CVE-2026-23132 – This CVE addresses error handling and resource ... (How to Fix)

Q: What is the severity of CVE-2026-23132?

CVE-2026-23132 has a CVSS score of N/A (Unknown). This CVE addresses error handling and resource leak vulnerabilities in the Linux kernel's DRM bridge driver for Synopsys DisplayPort. The flaws could lead to kernel resource exhaustion or system instability when specific error conditions occur during driver initialization. Systems using affected Linux kernel versions with the dw-dp driver are potentially vulnerable.

📋 TL;DR

This CVE addresses error handling and resource leak vulnerabilities in the Linux kernel's DRM bridge driver for Synopsys DisplayPort. The flaws could lead to kernel resource exhaustion or system instability when specific error conditions occur during driver initialization. Systems using affected Linux kernel versions with the dw-dp driver are potentially vulnerable.

💻 Affected Systems

Products:

Linux kernel with dw-dp DRM bridge driver

Versions: Specific kernel versions containing the vulnerable code (check git commits for exact range)

Operating Systems: Linux distributions using affected kernel versions

Default Config Vulnerable: ⚠️ Yes

Notes: Only affects systems using Synopsys DisplayPort hardware with the dw-dp driver enabled.

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:

Review the CVE details at NVD
Check vendor security advisories for your specific version
Test if the vulnerability is exploitable in your environment
Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Kernel panic or system crash due to resource exhaustion from unregistered DP aux devices, potentially leading to denial of service.

🟠

Likely Case

System instability or driver initialization failures when error conditions trigger during DisplayPort hardware initialization.

🟢

If Mitigated

Clean error handling with proper resource cleanup, preventing resource leaks and ensuring stable driver operation.

🌐 Internet-Facing: LOW - This is a local kernel driver vulnerability requiring local access or specific hardware interaction.

🏢 Internal Only: MEDIUM - Could affect system stability for users with affected hardware configurations, but requires specific error conditions to trigger.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Exploitation requires triggering specific error conditions during driver initialization, likely requiring local access and specific hardware configurations.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Kernel versions containing commits 1a0f69e3c28477b97d3609569b7e8feb4b6162e8 and 569ed6a73e927a34cae4ae6de1464c0737a5ec44

Vendor Advisory: https://git.kernel.org/stable/c/1a0f69e3c28477b97d3609569b7e8feb4b6162e8

Restart Required: No

Instructions:

1. Update to a patched Linux kernel version. 2. For custom kernels, apply the git commits to your kernel source. 3. Rebuild and install the updated kernel. 4. No system restart required for kernel module reload, but kernel update requires reboot.

🔧 Temporary Workarounds

Disable dw-dp driver

all

Prevent loading of the vulnerable driver module

echo 'blacklist dw_dp' >> /etc/modprobe.d/blacklist.conf
rmmod dw_dp

🧯 If You Can't Patch

Monitor system logs for driver initialization errors and kernel panics
Avoid using DisplayPort hardware that triggers the dw-dp driver initialization

🔍 How to Verify

Check if Vulnerable:

Check if dw_dp kernel module is loaded: lsmod | grep dw_dp. Check kernel version against patched versions.

Check Version:

uname -r

Verify Fix Applied:

Verify kernel version includes the fix commits. Check dmesg for clean driver initialization without resource leak warnings.

📡 Detection & Monitoring

Log Indicators:

Kernel messages about dw_dp driver errors
Resource leak warnings in dmesg
Driver initialization failure logs

Network Indicators:

None - this is a local driver issue

SIEM Query:

kernel: *dw_dp* AND (error OR fail OR panic OR leak)

📊 Metadata

CVE ID: CVE-2026-23132

CVSS v3 Score: N/A (Unknown)

Published: February 14, 2026

Last Updated: February 18, 2026

🔗 References

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