{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-46035",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-13T15:03:33.093Z",
        "datePublished": "2026-05-27T12:56:44.260Z",
        "dateUpdated": "2026-06-14T17:49:34.298Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-14T17:49:34.298Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/page_alloc: return NULL early from alloc_frozen_pages_nolock() in NMI on UP\n\nOn UP kernels (!CONFIG_SMP), spin_trylock() is a no-op that\nunconditionally succeeds even when the lock is already held. As a\nresult, alloc_frozen_pages_nolock() called from NMI context can\nre-enter rmqueue() and acquire the zone lock that the interrupted\ncontext is already holding, corrupting the freelists.\n\nWith CONFIG_DEBUG_SPINLOCK on UP, the following BUG is triggered with\nthe slub_kunit test module:\n\n  BUG: spinlock trylock failure on UP on CPU#0, kunit_try_catch/243\n  [...]\n  Call Trace:\n   <NMI>\n   dump_stack_lvl+0x3f/0x60\n   do_raw_spin_trylock+0x41/0x50\n   _raw_spin_trylock+0x24/0x50\n   rmqueue.isra.0+0x2a9/0xa70\n   get_page_from_freelist+0xeb/0x450\n   alloc_frozen_pages_nolock_noprof+0x111/0x1e0\n   allocate_slab+0x42a/0x500\n   ___slab_alloc+0xa7/0x4c0\n   kmalloc_nolock_noprof+0x164/0x310\n   [...]\n   </NMI>\n\nFix this by returning NULL early when invoked from NMI on a UP kernel."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "mm/page_alloc.c"
                    ],
                    "versions": [
                        {
                            "version": "d7242af8643409aae32243450341ef25b28d8a8c",
                            "lessThan": "05b4ed8bef30bba4f559c8d835e2dd20c48cf8a4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d7242af8643409aae32243450341ef25b28d8a8c",
                            "lessThan": "a6d57efeaae3f3b3656514f600eac96be713d90e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d7242af8643409aae32243450341ef25b28d8a8c",
                            "lessThan": "620b46ed6ae17c8438d889c8c0cfddab36a1476c",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "mm/page_alloc.c"
                    ],
                    "versions": [
                        {
                            "version": "6.18",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.18",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.27",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.4",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "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": "6.18",
                                    "versionEndExcluding": "6.18.27"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.18",
                                    "versionEndExcluding": "7.0.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.18",
                                    "versionEndExcluding": "7.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/05b4ed8bef30bba4f559c8d835e2dd20c48cf8a4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a6d57efeaae3f3b3656514f600eac96be713d90e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/620b46ed6ae17c8438d889c8c0cfddab36a1476c"
                }
            ],
            "title": "mm/page_alloc: return NULL early from alloc_frozen_pages_nolock() in NMI on UP",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}