{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-38401", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:24.012Z", "datePublished": "2025-07-25T12:53:44.961Z", "dateUpdated": "2026-08-05T12:01:37.420Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:01:37.420Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtk-sd: Prevent memory corruption from DMA map failure\n\nIf msdc_prepare_data() fails to map the DMA region, the request is\nnot prepared for data receiving, but msdc_start_data() proceeds\nthe DMA with previous setting.\nSince this will lead a memory corruption, we have to stop the\nrequest operation soon after the msdc_prepare_data() fails to\nprepare it." } ], "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 the MMC/SD block request path reached through ordinary local file or block-device I/O on the eMMC/SD device; no network or remote peer is involved.\nAC:L - The only precondition is a dma_map_sg() failure, which a local attacker directly induces by exhausting swiotlb bounce buffers, a restricted-dma-pool, or M4U IOVA space with concurrent large O_DIRECT I/O and memory pressure, then reliably lands the corrupt transfer since every subsequent request re-arms the stale BD ring.\nPR:L - Any unprivileged local user can submit MMC requests simply by reading/writing files on the eMMC- or SD-backed filesystem and can generate the DMA-resource pressure needed; no capability or root check exists anywhere on the path.\nUI:N - The corrupt DMA is started by the driver itself as soon as a mapping failure occurs during normal I/O; no victim action is required.\nS:U - The corruption is device DMA into kernel memory managed by the same kernel security authority; no VM, sandbox, or IOMMU translation boundary is crossed.\nC:H - On write transfers the controller streams the contents of stale, already-unmapped and potentially reallocated kernel pages out to the SD/eMMC medium, and the resulting corruption is leverageable for broader kernel memory disclosure.\nI:H - On read transfers the hardware writes attacker-supplied card data into freed/reused kernel memory at stale physical addresses, an uncontrolled kernel write primitive suitable for control-flow hijacking — the commit itself states this \"will lead a memory corruption\".\nA:H - The mismatched descriptor state triggers DMA protect/checksum errors and data timeouts, and DMA into reallocated kernel memory readily produces oopses and panics." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/mmc/host/mtk-sd.c" ], "versions": [ { "version": "208489032bdd8d4a7de50f3057c175058f271956", "lessThan": "5ac9e9e2e9cd6247d8c2d99780eae4556049e1cc", "status": "affected", "versionType": "git" }, { "version": "208489032bdd8d4a7de50f3057c175058f271956", "lessThan": "d54771571f74a82c59830a32e76af78a8e57ac69", "status": "affected", "versionType": "git" }, { "version": "208489032bdd8d4a7de50f3057c175058f271956", "lessThan": "48bf4f3dfcdab02b22581d8e350a2d23130b72c0", "status": "affected", "versionType": "git" }, { "version": "208489032bdd8d4a7de50f3057c175058f271956", "lessThan": "63e8953f16acdcb23e2d4dd8a566d3c34df3e200", "status": "affected", "versionType": "git" }, { "version": "208489032bdd8d4a7de50f3057c175058f271956", "lessThan": "61cdd663564674ea21ceb50aa9d3697cbe9e45f9", "status": "affected", "versionType": "git" }, { "version": "208489032bdd8d4a7de50f3057c175058f271956", "lessThan": "3419bc6a7b65cbbb91417bb9970208478e034c79", "status": "affected", "versionType": "git" }, { "version": "208489032bdd8d4a7de50f3057c175058f271956", "lessThan": "a5f5f67b284d81776d4a3eb1f8607e4b7f91f11c", "status": "affected", "versionType": "git" }, { "version": "208489032bdd8d4a7de50f3057c175058f271956", "lessThan": "f5de469990f19569627ea0dd56536ff5a13beaa3", "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/mmc/host/mtk-sd.c" ], "versions": [ { "version": "4.2", "status": "affected" }, { "version": "0", "lessThan": "4.2", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.296", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.240", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.187", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.144", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.97", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.37", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.15.6", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.16", "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": "4.2", "versionEndExcluding": "5.4.296" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "5.10.240" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "5.15.187" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.1.144" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.6.97" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.12.37" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.15.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.16" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/5ac9e9e2e9cd6247d8c2d99780eae4556049e1cc" }, { "url": "https://git.kernel.org/stable/c/d54771571f74a82c59830a32e76af78a8e57ac69" }, { "url": "https://git.kernel.org/stable/c/48bf4f3dfcdab02b22581d8e350a2d23130b72c0" }, { "url": "https://git.kernel.org/stable/c/63e8953f16acdcb23e2d4dd8a566d3c34df3e200" }, { "url": "https://git.kernel.org/stable/c/61cdd663564674ea21ceb50aa9d3697cbe9e45f9" }, { "url": "https://git.kernel.org/stable/c/3419bc6a7b65cbbb91417bb9970208478e034c79" }, { "url": "https://git.kernel.org/stable/c/a5f5f67b284d81776d4a3eb1f8607e4b7f91f11c" }, { "url": "https://git.kernel.org/stable/c/f5de469990f19569627ea0dd56536ff5a13beaa3" } ], "title": "mtk-sd: Prevent memory corruption from DMA map failure", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:37:35.519Z" } } ] } }