{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-38595",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T04:51:24.028Z",
        "datePublished": "2025-08-19T17:03:25.527Z",
        "dateUpdated": "2026-07-30T05:55:35.589Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-07-30T05:55:35.589Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxen: fix UAF in dmabuf_exp_from_pages()\n\n[dma_buf_fd() fixes; no preferences regarding the tree it goes through -\nup to xen folks]\n\nAs soon as we'd inserted a file reference into descriptor table, another\nthread could close it.  That's fine for the case when all we are doing is\nreturning that descriptor to userland (it's a race, but it's a userland\nrace and there's nothing the kernel can do about it).  However, if we\nfollow fd_install() with any kind of access to objects that would be\ndestroyed on close (be it the struct file itself or anything destroyed\nby its ->release()), we have a UAF.\n\ndma_buf_fd() is a combination of reserving a descriptor and fd_install().\ngntdev dmabuf_exp_from_pages() calls it and then proceeds to access the\nobjects destroyed on close - starting with gntdev_dmabuf itself.\n\nFix that by doing reserving descriptor before anything else and do\nfd_install() only when everything had been set up."
                }
            ],
            "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"
                    }
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/xen/gntdev-dmabuf.c"
                    ],
                    "versions": [
                        {
                            "version": "a240d6e42e28c34fdc34b3a98ca838a31c939901",
                            "lessThan": "e5907885260401bba300d4d18d79875c05b82651",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a240d6e42e28c34fdc34b3a98ca838a31c939901",
                            "lessThan": "3edfd2353f301bfffd5ee41066e37320a59ccc2d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a240d6e42e28c34fdc34b3a98ca838a31c939901",
                            "lessThan": "d59d49af4aeed9a81e673e37c26c6a3bacf1a181",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a240d6e42e28c34fdc34b3a98ca838a31c939901",
                            "lessThan": "532c8b51b3a8676cbf533a291f8156774f30ea87",
                            "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/xen/gntdev-dmabuf.c"
                    ],
                    "versions": [
                        {
                            "version": "4.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.42",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.15.10",
                            "lessThanOrEqual": "6.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.16.1",
                            "lessThanOrEqual": "6.16.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.17",
                            "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": "4.19",
                                    "versionEndExcluding": "6.12.42"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.15.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.16.1"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.17"
                                }
                            ]
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                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/e5907885260401bba300d4d18d79875c05b82651"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3edfd2353f301bfffd5ee41066e37320a59ccc2d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d59d49af4aeed9a81e673e37c26c6a3bacf1a181"
                },
                {
                    "url": "https://git.kernel.org/stable/c/532c8b51b3a8676cbf533a291f8156774f30ea87"
                }
            ],
            "title": "xen: fix UAF in dmabuf_exp_from_pages()",
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    }
}