{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-56611",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/mempolicy: fix migrate_to_node() assuming there is at least one VMA in a MM\n\nWe currently assume that there is at least one VMA in a MM, which isn't\ntrue.\n\nSo we might end up having find_vma() return NULL, to then de-reference\nNULL.  So properly handle find_vma() returning NULL.\n\nThis fixes the report:\n\nOops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\nCPU: 1 UID: 0 PID: 6021 Comm: syz-executor284 Not tainted 6.12.0-rc7-syzkaller-00187-gf868cd251776 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024\nRIP: 0010:migrate_to_node mm/mempolicy.c:1090 [inline]\nRIP: 0010:do_migrate_pages+0x403/0x6f0 mm/mempolicy.c:1194\nCode: ...\nRSP: 0018:ffffc9000375fd08 EFLAGS: 00010246\nRAX: 0000000000000000 RBX: ffffc9000375fd78 RCX: 0000000000000000\nRDX: ffff88807e171300 RSI: dffffc0000000000 RDI: ffff88803390c044\nRBP: ffff88807e171428 R08: 0000000000000014 R09: fffffbfff2039ef1\nR10: ffffffff901cf78f R11: 0000000000000000 R12: 0000000000000003\nR13: ffffc9000375fe90 R14: ffffc9000375fe98 R15: ffffc9000375fdf8\nFS:  00005555919e1380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00005555919e1ca8 CR3: 000000007f12a000 CR4: 00000000003526f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n <TASK>\n kernel_migrate_pages+0x5b2/0x750 mm/mempolicy.c:1709\n __do_sys_migrate_pages mm/mempolicy.c:1727 [inline]\n __se_sys_migrate_pages mm/mempolicy.c:1723 [inline]\n __x64_sys_migrate_pages+0x96/0x100 mm/mempolicy.c:1723\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\n[akpm@linux-foundation.org: add unlikely()]"
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "39743889aaf76725152f16aa90ca3c45f6d52da3",
                                            "version_value": "a13b2b9b0b0b04612c7d81e3b3dfb485c5f7abc3"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "2.6.16",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "2.6.16",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.6.66",
                                                        "lessThanOrEqual": "6.6.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.12.5",
                                                        "lessThanOrEqual": "6.12.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.13-rc2",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/a13b2b9b0b0b04612c7d81e3b3dfb485c5f7abc3",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/a13b2b9b0b0b04612c7d81e3b3dfb485c5f7abc3"
            },
            {
                "url": "https://git.kernel.org/stable/c/42d9fe2adf8613f9eea1f0c2619c9e2611eae0ea",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/42d9fe2adf8613f9eea1f0c2619c9e2611eae0ea"
            },
            {
                "url": "https://git.kernel.org/stable/c/091c1dd2d4df6edd1beebe0e5863d4034ade9572",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/091c1dd2d4df6edd1beebe0e5863d4034ade9572"
            }
        ]
    },
    "generator": {
        "engine": "bippy-5f407fcff5a0"
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}