{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "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": "2024-10-10T11:29:36.027Z"
    },
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                "dateUpdated": "2024-10-10T11:29:36.027Z"
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            "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"
                    ],
                    "versions": [
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                            "lessThan": "fd4d5cd7a2e8",
                            "status": "affected",
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                            "version": "9227da7816dd",
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                        "drivers/iommu/iommufd/selftest.c"
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                            "version": "6.6",
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                        {
                            "version": "0",
                            "lessThan": "6.6",
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                        {
                            "version": "6.6.55",
                            "lessThanOrEqual": "6.6.*",
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                        {
                            "version": "6.7.9",
                            "lessThanOrEqual": "6.7.*",
                            "status": "unaffected",
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                        },
                        {
                            "version": "6.8",
                            "lessThanOrEqual": "*",
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                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/fd4d5cd7a2e8f08357c9bfc0905957cffe8ce568"
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                    "url": "https://git.kernel.org/stable/c/fc719ecbca45c9c046640d72baddba3d83e0bc0b"
                },
                {
                    "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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                                "id": "CVE-2024-26785",
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                                    {
                                        "Exploitation": "none"
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                                "version": "2.0.3",
                                "timestamp": "2024-04-04T15:19:21.902975Z"
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                "references": [
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