{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-43207", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:55.993Z", "datePublished": "2026-05-06T11:28:11.601Z", "dateUpdated": "2026-08-05T12:26:34.312Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:26:34.312Z" }, "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": [ { "cvssV3_1": { "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" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable code is in the MediaTek MDP platform-driver probe/error path and the leaked V4L2 mem2mem device is reachable through local `/dev/video*` access, not through network, adjacent radio, or physical hotplug input.\nAC:L - There is no race or probabilistic trigger; once the VPU lookup/registration error condition occurs, the old probe path deterministically dereferences NULL or leaves the registered video device without proper cleanup.\nPR:L - A low-privileged local user with access to the exposed V4L2 device can open/ioctl the leaked node after probe failure. Although an administrator can also induce the probe failure via driver binding/module state, the higher-severity reasonable scenario is local exploitation of an already leaked device node.\nUI:N - No victim action is needed after the vulnerable device state exists; the attacker directly triggers the local device operation.\nS:U - The impact remains within the kernel/device security authority and does not cross a VM, IOMMU, or separate trust-boundary scope.\nC:H - The missing `mtk_mdp_unregister_m2m_device()` can leave a V4L2 device pointing at probe-owned `mtk_mdp_dev` state that is released on probe failure, creating a use-after-free style primitive. Per kernel CVSS guidance, such memory corruption is scored as high confidentiality impact.\nI:H - The dangling V4L2 path can write through freed/reused kernel structures during open and later mem2mem operations, making control-flow or data corruption plausible. Per kernel CVSS guidance, UAF-style memory corruption is high integrity impact.\nA:H - The direct NULL dereference in `vpu_wdt_reg_handler(NULL, ...)` can crash the kernel, and the leaked dangling video device can also produce kernel oopses. Kernel crash/oops conditions are high availability impact." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/media/platform/mediatek/mdp/mtk_mdp_core.c" ], "versions": [ { "version": "c8eb2d7e8202fd9cb912f5d33cc34ede66dcb24a", "lessThan": "9d9c67976eda502edc6b3a148a1c5b6a18b69a98", "status": "affected", "versionType": "git" }, { "version": "c8eb2d7e8202fd9cb912f5d33cc34ede66dcb24a", "lessThan": "0bc43eaf021347f8d5aba87712c36b799695eec6", "status": "affected", "versionType": "git" }, { "version": "c8eb2d7e8202fd9cb912f5d33cc34ede66dcb24a", "lessThan": "9d7962d5c81d6cf3f8dbdb5c71c57600bac5772b", "status": "affected", "versionType": "git" }, { "version": "c8eb2d7e8202fd9cb912f5d33cc34ede66dcb24a", "lessThan": "12cafc15d24611bfb43c82877b1bbb7454a85d5a", "status": "affected", "versionType": "git" }, { "version": "c8eb2d7e8202fd9cb912f5d33cc34ede66dcb24a", "lessThan": "c8737d33d4e8ffae87e5d5edac17f8a705235cc2", "status": "affected", "versionType": "git" }, { "version": "c8eb2d7e8202fd9cb912f5d33cc34ede66dcb24a", "lessThan": "b3fc99fe5b25613dd61c57bc70b8479adff4f60d", "status": "affected", "versionType": "git" }, { "version": "c8eb2d7e8202fd9cb912f5d33cc34ede66dcb24a", "lessThan": "2e8f53a7382943411557e370f1a4f3946624a30e", "status": "affected", "versionType": "git" }, { "version": "c8eb2d7e8202fd9cb912f5d33cc34ede66dcb24a", "lessThan": "8a8a3232abac5b972058a5f2cb3e33199d2a8648", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/media/platform/mediatek/mdp/mtk_mdp_core.c" ], "versions": [ { "version": "4.10", "status": "affected" }, { "version": "0", "lessThan": "4.10", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.252", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.202", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.165", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.128", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.75", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.16", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.19.6", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "5.10.252" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "5.15.202" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.1.165" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.6.128" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.12.75" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.18.16" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.19.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "7.0" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/9d9c67976eda502edc6b3a148a1c5b6a18b69a98" }, { "url": "https://git.kernel.org/stable/c/0bc43eaf021347f8d5aba87712c36b799695eec6" }, { "url": "https://git.kernel.org/stable/c/9d7962d5c81d6cf3f8dbdb5c71c57600bac5772b" }, { "url": "https://git.kernel.org/stable/c/12cafc15d24611bfb43c82877b1bbb7454a85d5a" }, { "url": "https://git.kernel.org/stable/c/c8737d33d4e8ffae87e5d5edac17f8a705235cc2" }, { "url": "https://git.kernel.org/stable/c/b3fc99fe5b25613dd61c57bc70b8479adff4f60d" }, { "url": "https://git.kernel.org/stable/c/2e8f53a7382943411557e370f1a4f3946624a30e" }, { "url": "https://git.kernel.org/stable/c/8a8a3232abac5b972058a5f2cb3e33199d2a8648" } ], "title": "media: mtk-mdp: Fix error handling in probe function", "x_generator": { "engine": "bippy-1.2.0" } } } }