{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-46199", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.104Z", "datePublished": "2026-05-28T09:40:16.061Z", "dateUpdated": "2026-08-05T12:30:24.038Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:30:24.038Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/vcn4: Prevent OOB reads when parsing dec msg\n\nCheck bounds against the end of the BO whenever we access the msg." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The bug is reached only through the local DRM command-submission ioctl (DRM_IOCTL_AMDGPU_CS) on /dev/dri/renderD*; there is no network path to the GPU CS parser.\nAC:L - The attacker fully controls the decode-message contents (num_buffers, offset, size) and the BO size, so the out-of-bounds read is triggered deterministically with no race or uncontrolled condition.\nPR:L - The CS ioctl is DRM_RENDER_ALLOW, accessible to any unprivileged local user holding an fd to the render node; no root or special capability is required.\nUI:N - The attacker directly submits the crafted command buffer; no action by another user is needed.\nS:U - The OOB read is performed by the CPU within the kernel's own kmap of the BO; the impact stays within the kernel security authority with no IOMMU/VM boundary crossed.\nC:H - num_buffers and offset are attacker-controlled 32-bit values, producing an unbounded out-of-bounds read of kernel memory well beyond a few bytes, which per guidance is High.\nI:N - The flaw is purely an out-of-bounds read; no kernel memory is written or otherwise modified along the path.\nA:H - The unbounded OOB read into unmapped kernel memory triggers a page fault/oops, crashing the kernel." } ] } ], "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/vcn_v4_0.c" ], "versions": [ { "version": "87cc7f9ebf7ce10f82250002d667ef3e93a79d44", "lessThan": "88411caee8f576d6b5abf6531232fcc0ce756dc5", "status": "affected", "versionType": "git" }, { "version": "87cc7f9ebf7ce10f82250002d667ef3e93a79d44", "lessThan": "c72a8b4dc6d598e3831ef3abd9c6527dfbf4810e", "status": "affected", "versionType": "git" }, { "version": "87cc7f9ebf7ce10f82250002d667ef3e93a79d44", "lessThan": "7688143ca62edeecacb3ba0a2cea129dbd262a18", "status": "affected", "versionType": "git" }, { "version": "87cc7f9ebf7ce10f82250002d667ef3e93a79d44", "lessThan": "63b51e8a9d54317d31cc3856c1e12407070d5fc2", "status": "affected", "versionType": "git" }, { "version": "87cc7f9ebf7ce10f82250002d667ef3e93a79d44", "lessThan": "3c817a60b09eaab926e475088e750936efcc95ae", "status": "affected", "versionType": "git" }, { "version": "87cc7f9ebf7ce10f82250002d667ef3e93a79d44", "lessThan": "0a78f2bac1424deb7c9d5e09c6b8e849d8e8b648", "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/vcn_v4_0.c" ], "versions": [ { "version": "5.13", "status": "affected" }, { "version": "0", "lessThan": "5.13", "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": "5.13", "versionEndExcluding": "6.1.175" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.6.140" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.12.90" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.18.32" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.0.9" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/88411caee8f576d6b5abf6531232fcc0ce756dc5" }, { "url": "https://git.kernel.org/stable/c/c72a8b4dc6d598e3831ef3abd9c6527dfbf4810e" }, { "url": "https://git.kernel.org/stable/c/7688143ca62edeecacb3ba0a2cea129dbd262a18" }, { "url": "https://git.kernel.org/stable/c/63b51e8a9d54317d31cc3856c1e12407070d5fc2" }, { "url": "https://git.kernel.org/stable/c/3c817a60b09eaab926e475088e750936efcc95ae" }, { "url": "https://git.kernel.org/stable/c/0a78f2bac1424deb7c9d5e09c6b8e849d8e8b648" } ], "title": "drm/amdgpu/vcn4: Prevent OOB reads when parsing dec msg", "x_generator": { "engine": "bippy-1.2.0" } } } }