{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-43461",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-01T14:12:56.010Z",
        "datePublished": "2026-05-08T14:22:23.999Z",
        "dateUpdated": "2026-08-05T12:28:05.393Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T12:28:05.393Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: amlogic: spifc-a4: Fix DMA mapping error handling\n\nFix three bugs in aml_sfc_dma_buffer_setup() error paths:\n1. Unnecessary goto: When the first DMA mapping (sfc->daddr) fails,\n   nothing needs cleanup. Use direct return instead of goto.\n2. Double-unmap bug: When info DMA mapping failed, the code would\n   unmap sfc->daddr inline, then fall through to out_map_data which\n   would unmap it again, causing a double-unmap.\n3. Wrong unmap size: The out_map_info label used datalen instead of\n   infolen when unmapping sfc->iaddr, which could lead to incorrect\n   DMA sync behavior."
                }
            ],
            "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 path is reached through local storage I/O to an Amlogic SPI-NAND/SPI-NOR controller via MTD/SPI-mem operations, not through an in-kernel network protocol.\nAC:L - There is no race to win; an attacker who can cause repeated flash reads/writes can exercise the DMA mapping error paths, and uncertainty about inducing mapping failure is resolved toward the higher-severity low-complexity value.\nPR:L - A low-privileged local user can plausibly trigger flash-backed filesystem or MTD read paths on affected embedded systems without kernel capabilities, even though direct raw MTD writes may be further restricted.\nUI:N - Exploitation is initiated by the attacker’s own local I/O and does not require a separate victim action.\nS:U - The impact remains within the kernel and device DMA management security authority; this is not a VM escape or crossing into a different authorization scope.\nC:H - The bad cleanup can double-unmap or over-unmap DMA/IOMMU mappings, plausibly creating stale or overlapping DMA mappings that can expose kernel memory.\nI:H - Corrupt DMA mapping bookkeeping can plausibly allow DMA aliasing or writes into unintended kernel memory, so integrity impact is high under the required higher-severity rule.\nA:H - Invalid, double, or wrong-sized DMA unmaps can trigger warnings, IOMMU/DMA allocator corruption, or crashes/hangs in kernel I/O paths."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/spi/spi-amlogic-spifc-a4.c"
                    ],
                    "versions": [
                        {
                            "version": "4670db6f32e9379f5ab6c9bb2a6787cd9b9230a9",
                            "lessThan": "0a83d6c9e149a176340190fa9cbadf2266db4c9a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4670db6f32e9379f5ab6c9bb2a6787cd9b9230a9",
                            "lessThan": "c0b88f1176074f80140ed77fce909f254b7180ab",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4670db6f32e9379f5ab6c9bb2a6787cd9b9230a9",
                            "lessThan": "b20b437666e1cb26a7c499d1664e8f2a0ac67000",
                            "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/spi/spi-amlogic-spifc-a4.c"
                    ],
                    "versions": [
                        {
                            "version": "6.18",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.18",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.19",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.9",
                            "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": "6.18.19"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.18",
                                    "versionEndExcluding": "6.19.9"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.18",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/0a83d6c9e149a176340190fa9cbadf2266db4c9a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c0b88f1176074f80140ed77fce909f254b7180ab"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b20b437666e1cb26a7c499d1664e8f2a0ac67000"
                }
            ],
            "title": "spi: amlogic: spifc-a4: Fix DMA mapping error handling",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}