{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-38029",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T04:51:23.978Z",
        "datePublished": "2025-06-18T09:33:17.632Z",
        "dateUpdated": "2026-05-11T21:19:55.115Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T21:19:55.115Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkasan: avoid sleepable page allocation from atomic context\n\napply_to_pte_range() enters the lazy MMU mode and then invokes\nkasan_populate_vmalloc_pte() callback on each page table walk iteration. \nHowever, the callback can go into sleep when trying to allocate a single\npage, e.g.  if an architecutre disables preemption on lazy MMU mode enter.\n\nOn s390 if make arch_enter_lazy_mmu_mode() -> preempt_enable() and\narch_leave_lazy_mmu_mode() -> preempt_disable(), such crash occurs:\n\n[    0.663336] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:321\n[    0.663348] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 2, name: kthreadd\n[    0.663358] preempt_count: 1, expected: 0\n[    0.663366] RCU nest depth: 0, expected: 0\n[    0.663375] no locks held by kthreadd/2.\n[    0.663383] Preemption disabled at:\n[    0.663386] [<0002f3284cbb4eda>] apply_to_pte_range+0xfa/0x4a0\n[    0.663405] CPU: 0 UID: 0 PID: 2 Comm: kthreadd Not tainted 6.15.0-rc5-gcc-kasan-00043-gd76bb1ebb558-dirty #162 PREEMPT\n[    0.663408] Hardware name: IBM 3931 A01 701 (KVM/Linux)\n[    0.663409] Call Trace:\n[    0.663410]  [<0002f3284c385f58>] dump_stack_lvl+0xe8/0x140\n[    0.663413]  [<0002f3284c507b9e>] __might_resched+0x66e/0x700\n[    0.663415]  [<0002f3284cc4f6c0>] __alloc_frozen_pages_noprof+0x370/0x4b0\n[    0.663419]  [<0002f3284ccc73c0>] alloc_pages_mpol+0x1a0/0x4a0\n[    0.663421]  [<0002f3284ccc8518>] alloc_frozen_pages_noprof+0x88/0xc0\n[    0.663424]  [<0002f3284ccc8572>] alloc_pages_noprof+0x22/0x120\n[    0.663427]  [<0002f3284cc341ac>] get_free_pages_noprof+0x2c/0xc0\n[    0.663429]  [<0002f3284cceba70>] kasan_populate_vmalloc_pte+0x50/0x120\n[    0.663433]  [<0002f3284cbb4ef8>] apply_to_pte_range+0x118/0x4a0\n[    0.663435]  [<0002f3284cbc7c14>] apply_to_pmd_range+0x194/0x3e0\n[    0.663437]  [<0002f3284cbc99be>] __apply_to_page_range+0x2fe/0x7a0\n[    0.663440]  [<0002f3284cbc9e88>] apply_to_page_range+0x28/0x40\n[    0.663442]  [<0002f3284ccebf12>] kasan_populate_vmalloc+0x82/0xa0\n[    0.663445]  [<0002f3284cc1578c>] alloc_vmap_area+0x34c/0xc10\n[    0.663448]  [<0002f3284cc1c2a6>] __get_vm_area_node+0x186/0x2a0\n[    0.663451]  [<0002f3284cc1e696>] __vmalloc_node_range_noprof+0x116/0x310\n[    0.663454]  [<0002f3284cc1d950>] __vmalloc_node_noprof+0xd0/0x110\n[    0.663457]  [<0002f3284c454b88>] alloc_thread_stack_node+0xf8/0x330\n[    0.663460]  [<0002f3284c458d56>] dup_task_struct+0x66/0x4d0\n[    0.663463]  [<0002f3284c45be90>] copy_process+0x280/0x4b90\n[    0.663465]  [<0002f3284c460940>] kernel_clone+0xd0/0x4b0\n[    0.663467]  [<0002f3284c46115e>] kernel_thread+0xbe/0xe0\n[    0.663469]  [<0002f3284c4e440e>] kthreadd+0x50e/0x7f0\n[    0.663472]  [<0002f3284c38c04a>] __ret_from_fork+0x8a/0xf0\n[    0.663475]  [<0002f3284ed57ff2>] ret_from_fork+0xa/0x38\n\nInstead of allocating single pages per-PTE, bulk-allocate the shadow\nmemory prior to applying kasan_populate_vmalloc_pte() callback on a page\nrange."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "mm/kasan/shadow.c"
                    ],
                    "versions": [
                        {
                            "version": "3c5c3cfb9ef4da957e3357a2bd36f76ee34c0862",
                            "lessThan": "6748dd09196248b985cca39eaf651d5317271977",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3c5c3cfb9ef4da957e3357a2bd36f76ee34c0862",
                            "lessThan": "b6ea95a34cbd014ab6ade4248107b86b0aaf2d6c",
                            "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/kasan/shadow.c"
                    ],
                    "versions": [
                        {
                            "version": "5.5",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.5",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.14.9",
                            "lessThanOrEqual": "6.14.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.15",
                            "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": "5.5",
                                    "versionEndExcluding": "6.14.9"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "6.15"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/6748dd09196248b985cca39eaf651d5317271977"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b6ea95a34cbd014ab6ade4248107b86b0aaf2d6c"
                }
            ],
            "title": "kasan: avoid sleepable page allocation from atomic context",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}