{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-74421",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-15T05:44:03.894Z",
        "datePublished": "2026-08-15T05:59:25.328Z",
        "dateUpdated": "2026-08-17T05:19:06.310Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T05:19:06.310Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/rockchip: dw_dp: Switch to drmm_kzalloc()\n\nDriver makes use of drmm_encoder_init() to initialize the encoder and\nautomatically handle the cleanup by registering drm_encoder_cleanup()\nwith drmm_add_action().\n\nHowever, the internal structure containing the encoder part gets\nallocated with devm_kzalloc(), which happens while component_bind_all()\nis being called from Rockchip DRM driver.  The component framework\nfurther ensures it is deallocated as part of releasing all the resources\nclaimed during bind, which is triggered from component_unbind_all().\n\nWhen the reference to the DRM device gets eventually dropped via\ndrm_dev_put() in rockchip_drm_unbind(), drmm_encoder_alloc_release()\nattempts to access the now released encoder structure, leading to\nuse-after-free.\n\nEnsure driver's internal structure is still reachable on encoder cleanup\nby switching from a device-managed allocation to a drm-managed one."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/rockchip/dw_dp-rockchip.c"
                    ],
                    "versions": [
                        {
                            "version": "d68ba7bac9555d05e2f5b310c898b2a5c7eff174",
                            "lessThan": "0d60b835bca42f0f790689dd47819ed881a92ccc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d68ba7bac9555d05e2f5b310c898b2a5c7eff174",
                            "lessThan": "6b0b92d1110eccccbd5ba2949bd2b9fb6ea5fc12",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d68ba7bac9555d05e2f5b310c898b2a5c7eff174",
                            "lessThan": "ed9da8d23020352ad24c528db09b5acdd78b81fd",
                            "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/rockchip/dw_dp-rockchip.c"
                    ],
                    "versions": [
                        {
                            "version": "6.18",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.18",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.40",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.5",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "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": "6.18",
                                    "versionEndExcluding": "6.18.40"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.18",
                                    "versionEndExcluding": "7.1.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.18",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/0d60b835bca42f0f790689dd47819ed881a92ccc"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6b0b92d1110eccccbd5ba2949bd2b9fb6ea5fc12"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ed9da8d23020352ad24c528db09b5acdd78b81fd"
                }
            ],
            "title": "drm/rockchip: dw_dp: Switch to drmm_kzalloc()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}