{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63848", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.016Z", "datePublished": "2026-07-19T14:04:40.798Z", "dateUpdated": "2026-08-05T12:36:26.280Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:36:26.280Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/jpeg: set no_user_fence for JPEG v2.0 ring\n\nJPEG rings do not support 64-bit user fence writes, reject CS\nsubmissions with user fences.\n\n(cherry picked from commit 96179da0c6b059eb31706a0abe8dd6381c533143)"}], "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 reached only through DRM_IOCTL_AMDGPU_CS on an AMDGPU render node (/dev/dri/renderD*), requiring a local ioctl to submit a command buffer with AMDGPU_CHUNK_ID_FENCE to the JPEG v2.0 decode ring (AMDGPU_HW_IP_VCN_JPEG).\nAC:L - On affected VCN 2.0.x hardware with JPEG v2.0 (e.g. Navi/Vega20), an attacker fully controls CS submission parameters and can reliably trigger the unsupported 64-bit user fence path without races or conditions beyond attacker control.\nPR:L - DRM_IOCTL_AMDGPU_CS is gated by DRM_AUTH|DRM_RENDER_ALLOW, so any unprivileged local user with render-node access (typically render/video group membership) can reach the vulnerable path without root or init-namespace capabilities.\nUI:N - Exploitation requires only programmatic ioctl submission by the attacker; no victim interaction such as opening files, mounting filesystems, or clicking prompts is needed.\nS:U - The flaw enables GPU-initiated memory corruption within the attacker's own AMDGPU context/VM via the render node, which is a standard local kernel/GPU-driver privilege boundary rather than a cross-authority escape such as VM guest-to-host or IOMMU bypass.\nC:H - Submitting a 64-bit user fence to a JPEG ring that only supports 32-bit fence writes causes the hardware to perform misdirected or out-of-bounds GPU memory writes, providing a memory-corruption primitive that can be leveraged for information disclosure.\nI:H - The unsupported fence write gives the attacker a GPU-initiated arbitrary-write primitive at attacker-chosen GPU virtual addresses within their VM mappings, which is memory corruption exploitable for further integrity compromise or code execution.\nA:H - Incorrect fence handling on the JPEG decode ring can hang or fault the GPU, trigger driver error-recovery paths, and cause system-wide graphics disruption or kernel oops, constituting 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/gpu/drm/amd/amdgpu/jpeg_v2_0.c"], "versions": [{"version": "6ac27241106bc946bd50032f4cd96899c6a6fe69", "lessThan": "f675801889b265634aefd30aa4503fc2b9e6ce1c", "status": "affected", "versionType": "git"}, {"version": "6ac27241106bc946bd50032f4cd96899c6a6fe69", "lessThan": "2e216c2ff159b2eb1da6e9c716d727efc73c64b5", "status": "affected", "versionType": "git"}, {"version": "6ac27241106bc946bd50032f4cd96899c6a6fe69", "lessThan": "b41248d1c18384835f6532e68592ee07605da283", "status": "affected", "versionType": "git"}, {"version": "6ac27241106bc946bd50032f4cd96899c6a6fe69", "lessThan": "41c4f3f68a343d62bd352a95ace93a11c4ad92ed", "status": "affected", "versionType": "git"}, {"version": "6ac27241106bc946bd50032f4cd96899c6a6fe69", "lessThan": "e5f612dc91650561fe2b5b76dd6d2898ec9ad480", "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/jpeg_v2_0.c"], "versions": [{"version": "5.6", "status": "affected"}, {"version": "0", "lessThan": "5.6", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.141", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.91", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "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": "5.6", "versionEndExcluding": "6.6.141"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.12.91"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.18.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f675801889b265634aefd30aa4503fc2b9e6ce1c"}, {"url": "https://git.kernel.org/stable/c/2e216c2ff159b2eb1da6e9c716d727efc73c64b5"}, {"url": "https://git.kernel.org/stable/c/b41248d1c18384835f6532e68592ee07605da283"}, {"url": "https://git.kernel.org/stable/c/41c4f3f68a343d62bd352a95ace93a11c4ad92ed"}, {"url": "https://git.kernel.org/stable/c/e5f612dc91650561fe2b5b76dd6d2898ec9ad480"}], "title": "drm/amdgpu/jpeg: set no_user_fence for JPEG v2.0 ring", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/amd/amdgpu/jpeg_v2_0.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "f675801889b265634aefd30aa4503fc2b9e6ce1c", "status": "affected", "version": "6ac27241106bc946bd50032f4cd96899c6a6fe69", "versionType": "git"}, {"lessThan": "2e216c2ff159b2eb1da6e9c716d727efc73c64b5", "status": "affected", "version": "6ac27241106bc946bd50032f4cd96899c6a6fe69", "versionType": "git"}, {"lessThan": "b41248d1c18384835f6532e68592ee07605da283", "status": "affected", "version": "6ac27241106bc946bd50032f4cd96899c6a6fe69", "versionType": "git"}, {"lessThan": "41c4f3f68a343d62bd352a95ace93a11c4ad92ed", "status": "affected", "version": "6ac27241106bc946bd50032f4cd96899c6a6fe69", "versionType": "git"}, {"lessThan": "e5f612dc91650561fe2b5b76dd6d2898ec9ad480", "status": "affected", "version": "6ac27241106bc946bd50032f4cd96899c6a6fe69", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/amd/amdgpu/jpeg_v2_0.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.6"}, {"lessThan": "5.6", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.141", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.91", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.33", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.10", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/jpeg: set no_user_fence for JPEG v2.0 ring\n\nJPEG rings do not support 64-bit user fence writes, reject CS\nsubmissions with user fences.\n\n(cherry picked from commit 96179da0c6b059eb31706a0abe8dd6381c533143)"}], "id": "CVE-2026-63848", "lastModified": "2026-07-27T17:44:23.777", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-07-19T15:16:51.600", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2e216c2ff159b2eb1da6e9c716d727efc73c64b5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/41c4f3f68a343d62bd352a95ace93a11c4ad92ed"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b41248d1c18384835f6532e68592ee07605da283"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e5f612dc91650561fe2b5b76dd6d2898ec9ad480"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f675801889b265634aefd30aa4503fc2b9e6ce1c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: drm/amdgpu/jpeg: set no_user_fence for JPEG v2.0 ring", "id": "2502291", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502291"}, "csaw": false, "cwe": "CWE-1287", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/amdgpu/jpeg: set no_user_fence for JPEG v2.0 ring\nJPEG rings do not support 64-bit user fence writes, reject CS\nsubmissions with user fences.\n(cherry picked from commit 96179da0c6b059eb31706a0abe8dd6381c533143)", "A flaw was found in the Linux kernel's AMD GPU JPEG driver. This vulnerability occurs because the JPEG rings do not support 64-bit user fence writes. An attacker could exploit this by submitting commands with 64-bit user fences, leading to the rejection of command submissions and potentially a denial of service."], "name": "CVE-2026-63848", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-63848\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-63848\nhttps://lore.kernel.org/linux-cve-announce/2026071930-CVE-2026-63848-7a61@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6ac27241106bc946bd50032f4cd96899c6a6fe69,f675801889b265634aefd30aa4503fc2b9e6ce1c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6ac27241106bc946bd50032f4cd96899c6a6fe69,2e216c2ff159b2eb1da6e9c716d727efc73c64b5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6ac27241106bc946bd50032f4cd96899c6a6fe69,b41248d1c18384835f6532e68592ee07605da283)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6ac27241106bc946bd50032f4cd96899c6a6fe69,41c4f3f68a343d62bd352a95ace93a11c4ad92ed)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6ac27241106bc946bd50032f4cd96899c6a6fe69,e5f612dc91650561fe2b5b76dd6d2898ec9ad480)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.6"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.6)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.141,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.91,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.33,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.10,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-07-21T02:45:02.818901+00:00", "updated": "2026-07-30T22:00:06.236650+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}