{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49506",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-02-26T02:08:31.586Z",
        "datePublished": "2025-02-26T02:13:38.168Z",
        "dateUpdated": "2026-05-11T19:01:13.972Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:01:13.972Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/mediatek: Add vblank register/unregister callback functions\n\nWe encountered a kernel panic issue that callback data will be NULL when\nit's using in ovl irq handler. There is a timing issue between\nmtk_disp_ovl_irq_handler() and mtk_ovl_disable_vblank().\n\nTo resolve this issue, we use the flow to register/unregister vblank cb:\n- Register callback function and callback data when crtc creates.\n- Unregister callback function and callback data when crtc destroies.\n\nWith this solution, we can assure callback data will not be NULL when\nvblank is disable."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/mediatek/mtk_disp_drv.h",
                        "drivers/gpu/drm/mediatek/mtk_disp_ovl.c",
                        "drivers/gpu/drm/mediatek/mtk_disp_rdma.c",
                        "drivers/gpu/drm/mediatek/mtk_drm_crtc.c",
                        "drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c",
                        "drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h"
                    ],
                    "versions": [
                        {
                            "version": "9b0704988b151824a51133dc4c921f4273c5d839",
                            "lessThan": "8a2dbdeccef6de47565638abdf3c25f41cdffc37",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9b0704988b151824a51133dc4c921f4273c5d839",
                            "lessThan": "8a265d9838bc3c63579002d55c2b2c655c4f8f26",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9b0704988b151824a51133dc4c921f4273c5d839",
                            "lessThan": "3a4027b5971fe2a94e32754f007d9d3c12c68ad1",
                            "status": "affected",
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                            "lessThan": "b74d921b900b6ce38c6247c0a1c86be9f3746493",
                            "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/gpu/drm/mediatek/mtk_disp_drv.h",
                        "drivers/gpu/drm/mediatek/mtk_disp_ovl.c",
                        "drivers/gpu/drm/mediatek/mtk_disp_rdma.c",
                        "drivers/gpu/drm/mediatek/mtk_drm_crtc.c",
                        "drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c",
                        "drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h"
                    ],
                    "versions": [
                        {
                            "version": "5.12",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.12",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.54",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.17.14",
                            "lessThanOrEqual": "5.17.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.18.3",
                            "lessThanOrEqual": "5.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.19",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.12",
                                    "versionEndExcluding": "5.15.54"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.12",
                                    "versionEndExcluding": "5.17.14"
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                                    "versionStartIncluding": "5.12",
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "5.19"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/8a2dbdeccef6de47565638abdf3c25f41cdffc37"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8a265d9838bc3c63579002d55c2b2c655c4f8f26"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3a4027b5971fe2a94e32754f007d9d3c12c68ad1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b74d921b900b6ce38c6247c0a1c86be9f3746493"
                }
            ],
            "title": "drm/mediatek: Add vblank register/unregister callback functions",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}