{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-23280",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-01-13T15:37:45.992Z",
        "datePublished": "2026-03-25T10:26:41.088Z",
        "dateUpdated": "2026-08-05T12:21:08.197Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T12:21:08.197Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/amdxdna: Prevent ubuf size overflow\n\nThe ubuf size calculation may overflow, resulting in an undersized\nallocation and possible memory corruption.\n\nUse check_add_overflow() helpers to validate the size calculation before\nallocation."
                }
            ],
            "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 vulnerability is triggered via a DRM ioctl (AMDXDNA_CREATE_BO) on a local accelerator device node (/dev/accel/accelN), requiring local system access.\nAC:L - The integer overflow is reliably triggered by providing crafted va_entry len values that sum to wrap around. No race condition or special conditions beyond attacker control are required.\nPR:L - The ioctl is defined with flags 0 (no DRM_ROOT_ONLY), so any user who can open the accel device node can trigger it. On systems with AMD XDNA hardware, logged-in desktop users typically have access via the render group.\nUI:N - No user interaction is needed; the attacker directly issues the ioctl.\nS:U - The vulnerability is a kernel memory corruption within the kernel's security authority; no cross-boundary escape (VM, IOMMU) is involved.\nC:H - The heap buffer overflow writes page structure pointers beyond the allocated array, corrupting adjacent kernel heap objects. This memory corruption can be leveraged to read arbitrary kernel memory.\nI:H - The heap buffer overflow corrupts kernel heap metadata and adjacent objects, which can be exploited for arbitrary write primitives and code execution via heap spraying techniques.\nA:H - The heap corruption will cause kernel crashes (oops/panic) when corrupted objects are subsequently accessed."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/accel/amdxdna/amdxdna_ubuf.c"
                    ],
                    "versions": [
                        {
                            "version": "bd72d4acda1069579b35123e3cc0b21ec1193a21",
                            "lessThan": "1500b31db94374a6669e73ce94d6f71cf8e85e06",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bd72d4acda1069579b35123e3cc0b21ec1193a21",
                            "lessThan": "972bf4a23478fcb247b4f507d47a584bc8aea5bd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bd72d4acda1069579b35123e3cc0b21ec1193a21",
                            "lessThan": "03808abb1d868aed7478a11a82e5bb4b3f1ca6d6",
                            "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/accel/amdxdna/amdxdna_ubuf.c"
                    ],
                    "versions": [
                        {
                            "version": "6.18",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.18",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.17",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.7",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "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": "6.18.17"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.18",
                                    "versionEndExcluding": "6.19.7"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.18",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/1500b31db94374a6669e73ce94d6f71cf8e85e06"
                },
                {
                    "url": "https://git.kernel.org/stable/c/972bf4a23478fcb247b4f507d47a584bc8aea5bd"
                },
                {
                    "url": "https://git.kernel.org/stable/c/03808abb1d868aed7478a11a82e5bb4b3f1ca6d6"
                }
            ],
            "title": "accel/amdxdna: Prevent ubuf size overflow",
            "x_generator": {
                "engine": "bippy-1.2.0"
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}