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    "cveMetadata": {
        "cveId": "CVE-2024-26785",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-02-19T14:20:24.178Z",
        "datePublished": "2024-04-04T08:20:18.467Z",
        "dateUpdated": "2026-05-11T20:04:08.484Z"
    },
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                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T20:04:08.484Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Fix protection fault in iommufd_test_syz_conv_iova\n\nSyzkaller reported the following bug:\n\n  general protection fault, probably for non-canonical address 0xdffffc0000000038: 0000 [#1] SMP KASAN\n  KASAN: null-ptr-deref in range [0x00000000000001c0-0x00000000000001c7]\n  Call Trace:\n   lock_acquire\n   lock_acquire+0x1ce/0x4f0\n   down_read+0x93/0x4a0\n   iommufd_test_syz_conv_iova+0x56/0x1f0\n   iommufd_test_access_rw.isra.0+0x2ec/0x390\n   iommufd_test+0x1058/0x1e30\n   iommufd_fops_ioctl+0x381/0x510\n   vfs_ioctl\n   __do_sys_ioctl\n   __se_sys_ioctl\n   __x64_sys_ioctl+0x170/0x1e0\n   do_syscall_x64\n   do_syscall_64+0x71/0x140\n\nThis is because the new iommufd_access_change_ioas() sets access->ioas to\nNULL during its process, so the lock might be gone in a concurrent racing\ncontext.\n\nFix this by doing the same access->ioas sanity as iommufd_access_rw() and\niommufd_access_pin_pages() functions do."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/iommu/iommufd/selftest.c"
                    ],
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                            "lessThan": "fd4d5cd7a2e8f08357c9bfc0905957cffe8ce568",
                            "status": "affected",
                            "versionType": "git"
                        },
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                            "version": "9227da7816dd1a42e20d41e2244cb63c205477ca",
                            "lessThan": "fc719ecbca45c9c046640d72baddba3d83e0bc0b",
                            "status": "affected",
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                    ]
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                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/iommu/iommufd/selftest.c"
                    ],
                    "versions": [
                        {
                            "version": "6.6",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.6",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.55",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.7.9",
                            "lessThanOrEqual": "6.7.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.8",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
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                    "nodes": [
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                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6",
                                    "versionEndExcluding": "6.6.55"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6",
                                    "versionEndExcluding": "6.7.9"
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/fd4d5cd7a2e8f08357c9bfc0905957cffe8ce568"
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                    "url": "https://git.kernel.org/stable/c/fc719ecbca45c9c046640d72baddba3d83e0bc0b"
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                {
                    "url": "https://git.kernel.org/stable/c/cf7c2789822db8b5efa34f5ebcf1621bc0008d48"
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            "title": "iommufd: Fix protection fault in iommufd_test_syz_conv_iova",
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        "adp": [
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                    {
                        "descriptions": [
                            {
                                "type": "CWE",
                                "cweId": "CWE-120",
                                "lang": "en",
                                "description": "CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')"
                            }
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                "metrics": [
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                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 5.5,
                            "attackVector": "LOCAL",
                            "baseSeverity": "MEDIUM",
                            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                            "integrityImpact": "NONE",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "LOW",
                            "confidentialityImpact": "NONE"
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                            "content": {
                                "timestamp": "2024-04-04T15:19:21.902975Z",
                                "id": "CVE-2024-26785",
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                                "role": "CISA Coordinator",
                                "version": "2.0.3"
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                    "shortName": "CISA-ADP",
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                    "shortName": "CVE",
                    "dateUpdated": "2024-08-02T00:14:13.352Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://git.kernel.org/stable/c/fc719ecbca45c9c046640d72baddba3d83e0bc0b",
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