CVE-2026-43207

Description

In the Linux kernel, the following vulnerability has been resolved: media: mtk-mdp: Fix error handling in probe function Add mtk_mdp_unregister_m2m_device() on the error handling path to prevent resource leak. Add check for the return value of vpu_get_plat_device() to prevent null pointer dereference. And vpu_get_plat_device() increases the reference count of the returned platform device. Add platform_device_put() to prevent reference leak.

CVSS Details

CVSS Score

7.8

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Configurations (Affected Products)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* - VULNERABLE

Linux Kernel (Versions prior to commit 0bc43eaf021347f8d5aba87712c36b799695eec6)

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

#!/bin/bash
# This PoC script checks if the kernel is vulnerable based on the version.
# Exploitation requires local access and specific hardware (MediaTek).

KERNEL_VERSION=$(uname -r)
VULNERABLE_COMMIT="0bc43eaf021347f8d5aba87712c36b799695eec6"

echo "Checking Kernel Version: $KERNEL_VERSION"
echo "Vulnerability fixed in commit: $VULNERABLE_COMMIT"

if [ -d "/sys/kernel/debug/tracing" ]; then
    echo "System has tracing enabled, potential for deeper analysis."
fi

# Note: Actual exploitation involves triggering the mtk-mdp probe failure.
echo "To verify vulnerability, inspect kernel source for mtk-mdp probe function."
echo "Look for missing mtk_mdp_unregister_m2m_device and vpu_get_plat_device checks."

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-43207
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-43207
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-43207/
[4] VulDB https://vuldb.com/cve/CVE-2026-43207
[5] https://git.kernel.org/stable/c/0bc43eaf021347f8d5aba87712c36b799695eec6
[6] https://git.kernel.org/stable/c/12cafc15d24611bfb43c82877b1bbb7454a85d5a
[7] https://git.kernel.org/stable/c/2e8f53a7382943411557e370f1a4f3946624a30e
[8] https://git.kernel.org/stable/c/8a8a3232abac5b972058a5f2cb3e33199d2a8648
[9] https://git.kernel.org/stable/c/9d7962d5c81d6cf3f8dbdb5c71c57600bac5772b
[10] https://git.kernel.org/stable/c/9d9c67976eda502edc6b3a148a1c5b6a18b69a98
[11] https://git.kernel.org/stable/c/b3fc99fe5b25613dd61c57bc70b8479adff4f60d
[12] https://git.kernel.org/stable/c/c8737d33d4e8ffae87e5d5edac17f8a705235cc2

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-43207", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2026-05-06T12:16:40.037", "lastModified": "2026-05-11T19:59:34.427", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: mtk-mdp: Fix error handling in probe function\n\nAdd mtk_mdp_unregister_m2m_device() on the error handling path to prevent\nresource leak.\n\nAdd check for the return value of vpu_get_plat_device() to prevent null\npointer dereference. And vpu_get_plat_device() increases the reference\ncount of the returned platform device. Add platform_device_put() to\nprevent reference leak."}], "metrics": {"cvssMetricV31": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-476"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "5.10.252", "matchCriteriaId": "6237C80F-2950-41ED-A424-2872192E5F12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.15.202", "matchCriteriaId": "4002FC2B-1456-4666-B240-0EBF590C4671"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.1.165", "matchCriteriaId": "797C7F46-D0BE-4FB8-A502-C5EF8E6B6654"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.6.128", "matchCriteriaId": "851E9353-6C09-4CC9-877E-E09DB164A3C2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.12.75", "matchCriteriaId": "BCE16369-98ED-41CF-8995-DFDC10B288D2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.18.16", "matchCriteriaId": "B4B8CDA9-BADF-4CF5-8B3B-702DE8EEA40B"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "6.19.6", "matchCriteriaId": "373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/0bc43eaf021347f8d5aba87712c36b799695eec6", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/12cafc15d24611bfb43c82877b1bbb7454a85d5a", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/2e8f53a7382943411557e370f1a4f3946624a30e", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/8a8a3232abac5b972058a5f2cb3e33199d2a8648", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/9d7962d5c81d6cf3f8dbdb5c71c57600bac5772b", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/9d9c67976eda502edc6b3a148a1c5b6a18b69a98", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/b3fc99fe5b25613dd61c57bc70b8479adff4f60d", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/c8737d33d4e8ffae87e5d5edac17f8a705235cc2", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}]}}