{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-46220",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-13T15:03:33.106Z",
        "datePublished": "2026-05-28T09:40:35.971Z",
        "dateUpdated": "2026-06-14T18:03:38.077Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-14T18:03:38.077Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/sdma4: replace BUG_ON with WARN_ON in fence emission\n\nsdma_v4_0_ring_emit_fence() contains two BUG_ON(addr & 0x3) assertions\nthat verify fence writeback addresses are dword-aligned.  These\nassertions can be reached from unprivileged userspace via crafted\nDRM_IOCTL_AMDGPU_CS submissions, causing a fatal kernel panic in a\nscheduler worker thread.\n\nReplace both BUG_ON() calls with WARN_ON() to log the condition without\ncrashing the kernel.  A misaligned fence address at this point indicates\na driver bug, but crashing the kernel is never the correct response when\nthe assertion is reachable from userspace.\n\nThe CS IOCTL path is the correct place to filter invalid submissions;\nthe ring emission callback is too late to do anything about it.\n\n(cherry picked from commit b90250bd933afd1ba94d86d6b13821997b22b18e)"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c"
                    ],
                    "versions": [
                        {
                            "version": "2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7",
                            "lessThan": "ecaa80318e900ca0c3f687742ede33b41cfd2f8e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7",
                            "lessThan": "25e7d56a39657d56d1ea6d78992f7ed15dedb412",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7",
                            "lessThan": "d4c56932d29773e278be6a65a5384a36c95b89a4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7",
                            "lessThan": "4f7ca00fa91daf0795ec6b3b130c5ebba1f155fe",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7",
                            "lessThan": "d331fb241a4602253976ddd65144a8ba2b05665d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7",
                            "lessThan": "0b91ea46bb68abf98a082bf239092253bbd6aaa2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7",
                            "lessThan": "a4fd82fb0757c180bf622907397c528b89a827b2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7",
                            "lessThan": "78d2e624fa073c14970aa097adcf3ea31c157a66",
                            "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/amd/amdgpu/sdma_v4_0.c"
                    ],
                    "versions": [
                        {
                            "version": "4.12",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.12",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.258",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.209",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.175",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.140",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.90",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.32",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.9",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "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": "4.12",
                                    "versionEndExcluding": "5.10.258"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/ecaa80318e900ca0c3f687742ede33b41cfd2f8e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/25e7d56a39657d56d1ea6d78992f7ed15dedb412"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d4c56932d29773e278be6a65a5384a36c95b89a4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4f7ca00fa91daf0795ec6b3b130c5ebba1f155fe"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d331fb241a4602253976ddd65144a8ba2b05665d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0b91ea46bb68abf98a082bf239092253bbd6aaa2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a4fd82fb0757c180bf622907397c528b89a827b2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/78d2e624fa073c14970aa097adcf3ea31c157a66"
                }
            ],
            "title": "drm/amdgpu/sdma4: replace BUG_ON with WARN_ON in fence emission",
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}