CVE-2026-64131 (GCVE-0-2026-64131)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:40 – Updated: 2026-07-19 15:40
VLAI
Title
mm/memory: fix spurious warning when unmapping device-private/exclusive pages
Summary
In the Linux kernel, the following vulnerability has been resolved: mm/memory: fix spurious warning when unmapping device-private/exclusive pages Device private and exclusive entries are only supported for anonymous folios. This condition is tested in __migrate_device_pages() and make_device_exclusive() using folio_test_anon(). However the unmap path tests this assumption using vma_is_anonymous(). This is wrong because whilst anonymous VMAs can only contain folios where folio_test_anon() is true the opposite relation does not hold. A folio for which folio_test_anon() is true does not imply vma_is_anonymous() is true. Such a condition can occur if for example a folio is part of a private filebacked mapping. In this case vma_is_anonymous() is false as the mapping is filebacked, but folio_test_anon() may be true, thus permitting devices to migrate the folio to device private memory. This can lead to the following spurious warnings during process teardown: [ 772.737706] ------------[ cut here ]------------ [ 772.739201] WARNING: mm/memory.c:1754 at unmap_page_range.cold+0x26/0x18a, CPU#17: hmm-tests/2041 [ 772.742050] Modules linked in: test_hmm nvidia_uvm(O) nvidia(O) [ 772.743959] CPU: 17 UID: 0 PID: 2041 Comm: hmm-tests Tainted: G W O 7.0.0+ #387 PREEMPT(full) [ 772.747104] Tainted: [W]=WARN, [O]=OOT_MODULE [ 772.748509] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.17.0-0-gb52ca86e094d-prebuilt.qemu.org 04/01/2014 [ 772.752117] RIP: 0010:unmap_page_range.cold+0x26/0x18a [ 772.753780] Code: 7e fe ff ff 48 89 4c 24 78 4c 89 44 24 38 e8 f2 ff b1 00 48 8b 4c 24 78 4c 8b 44 24 38 48 8b 44 24 18 48 83 78 48 00 74 04 90 <0f> 0b 90 48 89 ca b8 ff ff 37 00 48 c1 ea 03 48 c1 e0 2a 80 3c 02 [ 772.759602] RSP: 0018:ffff888112607550 EFLAGS: 00010286 [ 772.761310] RAX: ffff88811bbf4dc0 RBX: dffffc0000000000 RCX: ffffea03e9bfffd8 [ 772.763583] RDX: 1ffff1102377e9c1 RSI: 0000000000000008 RDI: ffff88811bbf4e08 [ 772.765914] RBP: 0000000000000006 R08: ffff8881059f7448 R09: ffffed10224c0e68 [ 772.768184] R10: ffff888112607347 R11: 0000000000000001 R12: 0000000000000001 [ 772.770461] R13: ffffea03e9bfffc0 R14: ffff888112607908 R15: ffffea03e9bfffc0 [ 772.772782] FS: 00007f327caa2780(0000) GS:ffff888427b7d000(0000) knlGS:0000000000000000 [ 772.775328] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 772.777187] CR2: 00007f327ca89000 CR3: 00000001994d5000 CR4: 00000000000006f0 [ 772.779135] Call Trace: [ 772.779792] <TASK> [ 772.780317] ? dmirror_interval_invalidate+0x1a3/0x290 [test_hmm] [ 772.781873] ? vm_normal_page_pud+0x2b0/0x2b0 [ 772.782992] ? __rwlock_init+0x150/0x150 [ 772.784006] ? lock_release+0x216/0x2b0 [ 772.785008] ? __mmu_notifier_invalidate_range_start+0x505/0x6e0 [ 772.786522] ? lock_release+0x216/0x2b0 [ 772.787498] ? unmap_single_vma+0xb6/0x210 [ 772.788573] unmap_vmas+0x27d/0x520 [ 772.789506] ? unmap_single_vma+0x210/0x210 [ 772.790607] ? mas_update_gap.part.0+0x620/0x620 [ 772.791834] unmap_region+0x19e/0x350 [ 772.792769] ? remove_vma+0x130/0x130 [ 772.793684] ? mas_alloc_nodes+0x1f2/0x300 [ 772.794730] vms_complete_munmap_vmas+0x8c1/0xe20 [ 772.795926] ? unmap_region+0x350/0x350 [ 772.796917] do_vmi_align_munmap+0x36a/0x4e0 [ 772.798018] ? lock_release+0x216/0x2b0 [ 772.799024] ? vma_shrink+0x620/0x620 [ 772.799983] do_vmi_munmap+0x150/0x2c0 [ 772.800939] __vm_munmap+0x161/0x2c0 [ 772.801872] ? expand_downwards+0xd60/0xd60 [ 772.802948] ? clockevents_program_event+0x1ef/0x540 [ 772.804217] ? lock_release+0x216/0x2b0 [ 772.805158] __x64_sys_munmap+0x59/0x80 [ 772.805776] do_syscall_64+0xfc/0x670 [ 772.806336] ? irqentry_exit+0xda/0x580 [ 772.806976] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 772.807772] RIP: 0033:0x7f327cbb2717 [ 772.808323] Code: 73 01 c3 48 8b 0d f9 76 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0b 00 00 00 0f 05 <48> 3d 01 f0 ff ---truncated---
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 999dad824c39ed14dee7c4412aae531ba9e74a90 , < e81446b559db4c98a6c2c5e039ac9cb23658432e (git)
Affected: 999dad824c39ed14dee7c4412aae531ba9e74a90 , < e7af1b15c884ed12bb69da11aec095045d861ee8 (git)
Affected: 999dad824c39ed14dee7c4412aae531ba9e74a90 , < a825691b804b35141aaf4eac91003a70846e316d (git)
Affected: 999dad824c39ed14dee7c4412aae531ba9e74a90 , < 2fff0cdd942261497fb8922a194b4da3315ae864 (git)
Affected: 999dad824c39ed14dee7c4412aae531ba9e74a90 , < 52f72b3f8f6fa64abb71b711962b97f1f6aced1c (git)
Affected: 999dad824c39ed14dee7c4412aae531ba9e74a90 , < be3f38d05cc5a7c3f13e51994c5dd043ab604d28 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 6.1.176 , ≤ 6.1.* (semver)
Unaffected: 6.6.143 , ≤ 6.6.* (semver)
Unaffected: 6.12.93 , ≤ 6.12.* (semver)
Unaffected: 6.18.34 , ≤ 6.18.* (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/memory: fix spurious warning when unmapping device-private/exclusive pages\n\nDevice private and exclusive entries are only supported for anonymous\nfolios.  This condition is tested in __migrate_device_pages() and\nmake_device_exclusive() using folio_test_anon().  However the unmap path\ntests this assumption using vma_is_anonymous().\n\nThis is wrong because whilst anonymous VMAs can only contain folios where\nfolio_test_anon() is true the opposite relation does not hold.  A folio\nfor which folio_test_anon() is true does not imply vma_is_anonymous() is\ntrue.  Such a condition can occur if for example a folio is part of a\nprivate filebacked mapping.\n\nIn this case vma_is_anonymous() is false as the mapping is filebacked, but\nfolio_test_anon() may be true, thus permitting devices to migrate the\nfolio to device private memory.  This can lead to the following spurious\nwarnings during process teardown:\n\n[  772.737706] ------------[ cut here ]------------\n[  772.739201] WARNING: mm/memory.c:1754 at unmap_page_range.cold+0x26/0x18a, CPU#17: hmm-tests/2041\n[  772.742050] Modules linked in: test_hmm nvidia_uvm(O) nvidia(O)\n[  772.743959] CPU: 17 UID: 0 PID: 2041 Comm: hmm-tests Tainted: G        W  O        7.0.0+ #387 PREEMPT(full)\n[  772.747104] Tainted: [W]=WARN, [O]=OOT_MODULE\n[  772.748509] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.17.0-0-gb52ca86e094d-prebuilt.qemu.org 04/01/2014\n[  772.752117] RIP: 0010:unmap_page_range.cold+0x26/0x18a\n[  772.753780] Code: 7e fe ff ff 48 89 4c 24 78 4c 89 44 24 38 e8 f2 ff b1 00 48 8b 4c 24 78 4c 8b 44 24 38 48 8b 44 24 18 48 83 78 48 00 74 04 90 \u003c0f\u003e 0b 90 48 89 ca b8 ff ff 37 00 48 c1 ea 03 48 c1 e0 2a 80 3c 02\n[  772.759602] RSP: 0018:ffff888112607550 EFLAGS: 00010286\n[  772.761310] RAX: ffff88811bbf4dc0 RBX: dffffc0000000000 RCX: ffffea03e9bfffd8\n[  772.763583] RDX: 1ffff1102377e9c1 RSI: 0000000000000008 RDI: ffff88811bbf4e08\n[  772.765914] RBP: 0000000000000006 R08: ffff8881059f7448 R09: ffffed10224c0e68\n[  772.768184] R10: ffff888112607347 R11: 0000000000000001 R12: 0000000000000001\n[  772.770461] R13: ffffea03e9bfffc0 R14: ffff888112607908 R15: ffffea03e9bfffc0\n[  772.772782] FS:  00007f327caa2780(0000) GS:ffff888427b7d000(0000) knlGS:0000000000000000\n[  772.775328] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  772.777187] CR2: 00007f327ca89000 CR3: 00000001994d5000 CR4: 00000000000006f0\n[  772.779135] Call Trace:\n[  772.779792]  \u003cTASK\u003e\n[  772.780317]  ? dmirror_interval_invalidate+0x1a3/0x290 [test_hmm]\n[  772.781873]  ? vm_normal_page_pud+0x2b0/0x2b0\n[  772.782992]  ? __rwlock_init+0x150/0x150\n[  772.784006]  ? lock_release+0x216/0x2b0\n[  772.785008]  ? __mmu_notifier_invalidate_range_start+0x505/0x6e0\n[  772.786522]  ? lock_release+0x216/0x2b0\n[  772.787498]  ? unmap_single_vma+0xb6/0x210\n[  772.788573]  unmap_vmas+0x27d/0x520\n[  772.789506]  ? unmap_single_vma+0x210/0x210\n[  772.790607]  ? mas_update_gap.part.0+0x620/0x620\n[  772.791834]  unmap_region+0x19e/0x350\n[  772.792769]  ? remove_vma+0x130/0x130\n[  772.793684]  ? mas_alloc_nodes+0x1f2/0x300\n[  772.794730]  vms_complete_munmap_vmas+0x8c1/0xe20\n[  772.795926]  ? unmap_region+0x350/0x350\n[  772.796917]  do_vmi_align_munmap+0x36a/0x4e0\n[  772.798018]  ? lock_release+0x216/0x2b0\n[  772.799024]  ? vma_shrink+0x620/0x620\n[  772.799983]  do_vmi_munmap+0x150/0x2c0\n[  772.800939]  __vm_munmap+0x161/0x2c0\n[  772.801872]  ? expand_downwards+0xd60/0xd60\n[  772.802948]  ? clockevents_program_event+0x1ef/0x540\n[  772.804217]  ? lock_release+0x216/0x2b0\n[  772.805158]  __x64_sys_munmap+0x59/0x80\n[  772.805776]  do_syscall_64+0xfc/0x670\n[  772.806336]  ? irqentry_exit+0xda/0x580\n[  772.806976]  entry_SYSCALL_64_after_hwframe+0x4b/0x53\n[  772.807772] RIP: 0033:0x7f327cbb2717\n[  772.808323] Code: 73 01 c3 48 8b 0d f9 76 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0b 00 00 00 0f 05 \u003c48\u003e 3d 01 f0 ff\n---truncated---"
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          "url": "https://git.kernel.org/stable/c/e81446b559db4c98a6c2c5e039ac9cb23658432e"
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          "url": "https://git.kernel.org/stable/c/e7af1b15c884ed12bb69da11aec095045d861ee8"
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        },
        {
          "url": "https://git.kernel.org/stable/c/be3f38d05cc5a7c3f13e51994c5dd043ab604d28"
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      "title": "mm/memory: fix spurious warning when unmapping device-private/exclusive pages",
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    "dateReserved": "2026-07-19T07:54:57.036Z",
    "dateUpdated": "2026-07-19T15:40:26.854Z",
    "state": "PUBLISHED"
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                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9062F1CD-CAD6-4EA2-A73F-C06D4A887B8C",
                    "versionEndExcluding": "6.6.143",
                    "versionStartIncluding": "6.2",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "1E73413E-0629-41AA-A4D3-5A3D10A0BD63",
                    "versionEndExcluding": "6.12.93",
                    "versionStartIncluding": "6.7",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A4B1EF6D-18D7-4838-BC37-7499D5DCC3C0",
                    "versionEndExcluding": "6.18.34",
                    "versionStartIncluding": "6.13",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "0520D091-FC52-4A50-AF07-70AE7D08B750",
                    "versionEndExcluding": "7.0.11",
                    "versionStartIncluding": "6.19",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*",
                    "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*",
                    "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*",
                    "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*",
                    "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9",
                    "vulnerable": true
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                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/memory: fix spurious warning when unmapping device-private/exclusive pages\n\nDevice private and exclusive entries are only supported for anonymous\nfolios.  This condition is tested in __migrate_device_pages() and\nmake_device_exclusive() using folio_test_anon().  However the unmap path\ntests this assumption using vma_is_anonymous().\n\nThis is wrong because whilst anonymous VMAs can only contain folios where\nfolio_test_anon() is true the opposite relation does not hold.  A folio\nfor which folio_test_anon() is true does not imply vma_is_anonymous() is\ntrue.  Such a condition can occur if for example a folio is part of a\nprivate filebacked mapping.\n\nIn this case vma_is_anonymous() is false as the mapping is filebacked, but\nfolio_test_anon() may be true, thus permitting devices to migrate the\nfolio to device private memory.  This can lead to the following spurious\nwarnings during process teardown:\n\n[  772.737706] ------------[ cut here ]------------\n[  772.739201] WARNING: mm/memory.c:1754 at unmap_page_range.cold+0x26/0x18a, CPU#17: hmm-tests/2041\n[  772.742050] Modules linked in: test_hmm nvidia_uvm(O) nvidia(O)\n[  772.743959] CPU: 17 UID: 0 PID: 2041 Comm: hmm-tests Tainted: G        W  O        7.0.0+ #387 PREEMPT(full)\n[  772.747104] Tainted: [W]=WARN, [O]=OOT_MODULE\n[  772.748509] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.17.0-0-gb52ca86e094d-prebuilt.qemu.org 04/01/2014\n[  772.752117] RIP: 0010:unmap_page_range.cold+0x26/0x18a\n[  772.753780] Code: 7e fe ff ff 48 89 4c 24 78 4c 89 44 24 38 e8 f2 ff b1 00 48 8b 4c 24 78 4c 8b 44 24 38 48 8b 44 24 18 48 83 78 48 00 74 04 90 \u003c0f\u003e 0b 90 48 89 ca b8 ff ff 37 00 48 c1 ea 03 48 c1 e0 2a 80 3c 02\n[  772.759602] RSP: 0018:ffff888112607550 EFLAGS: 00010286\n[  772.761310] RAX: ffff88811bbf4dc0 RBX: dffffc0000000000 RCX: ffffea03e9bfffd8\n[  772.763583] RDX: 1ffff1102377e9c1 RSI: 0000000000000008 RDI: ffff88811bbf4e08\n[  772.765914] RBP: 0000000000000006 R08: ffff8881059f7448 R09: ffffed10224c0e68\n[  772.768184] R10: ffff888112607347 R11: 0000000000000001 R12: 0000000000000001\n[  772.770461] R13: ffffea03e9bfffc0 R14: ffff888112607908 R15: ffffea03e9bfffc0\n[  772.772782] FS:  00007f327caa2780(0000) GS:ffff888427b7d000(0000) knlGS:0000000000000000\n[  772.775328] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  772.777187] CR2: 00007f327ca89000 CR3: 00000001994d5000 CR4: 00000000000006f0\n[  772.779135] Call Trace:\n[  772.779792]  \u003cTASK\u003e\n[  772.780317]  ? dmirror_interval_invalidate+0x1a3/0x290 [test_hmm]\n[  772.781873]  ? vm_normal_page_pud+0x2b0/0x2b0\n[  772.782992]  ? __rwlock_init+0x150/0x150\n[  772.784006]  ? lock_release+0x216/0x2b0\n[  772.785008]  ? __mmu_notifier_invalidate_range_start+0x505/0x6e0\n[  772.786522]  ? lock_release+0x216/0x2b0\n[  772.787498]  ? unmap_single_vma+0xb6/0x210\n[  772.788573]  unmap_vmas+0x27d/0x520\n[  772.789506]  ? unmap_single_vma+0x210/0x210\n[  772.790607]  ? mas_update_gap.part.0+0x620/0x620\n[  772.791834]  unmap_region+0x19e/0x350\n[  772.792769]  ? remove_vma+0x130/0x130\n[  772.793684]  ? mas_alloc_nodes+0x1f2/0x300\n[  772.794730]  vms_complete_munmap_vmas+0x8c1/0xe20\n[  772.795926]  ? unmap_region+0x350/0x350\n[  772.796917]  do_vmi_align_munmap+0x36a/0x4e0\n[  772.798018]  ? lock_release+0x216/0x2b0\n[  772.799024]  ? vma_shrink+0x620/0x620\n[  772.799983]  do_vmi_munmap+0x150/0x2c0\n[  772.800939]  __vm_munmap+0x161/0x2c0\n[  772.801872]  ? expand_downwards+0xd60/0xd60\n[  772.802948]  ? clockevents_program_event+0x1ef/0x540\n[  772.804217]  ? lock_release+0x216/0x2b0\n[  772.805158]  __x64_sys_munmap+0x59/0x80\n[  772.805776]  do_syscall_64+0xfc/0x670\n[  772.806336]  ? irqentry_exit+0xda/0x580\n[  772.806976]  entry_SYSCALL_64_after_hwframe+0x4b/0x53\n[  772.807772] RIP: 0033:0x7f327cbb2717\n[  772.808323] Code: 73 01 c3 48 8b 0d f9 76 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0b 00 00 00 0f 05 \u003c48\u003e 3d 01 f0 ff\n---truncated---"
          }
        ],
        "id": "CVE-2026-64131",
        "lastModified": "2026-08-13T15:10:21.220",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2026-07-19T16:17:54.853",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/2fff0cdd942261497fb8922a194b4da3315ae864"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/52f72b3f8f6fa64abb71b711962b97f1f6aced1c"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/a825691b804b35141aaf4eac91003a70846e316d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/be3f38d05cc5a7c3f13e51994c5dd043ab604d28"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/e7af1b15c884ed12bb69da11aec095045d861ee8"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/e81446b559db4c98a6c2c5e039ac9cb23658432e"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-13T16:55:28+00:00",
      "cve": "CVE-2026-64131",
      "id": "CVE-2026-64131",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_affected": "198",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: mm/memory: fix spurious warning when unmapping device-private/exclusive pages",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64131.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-18T00:43:37Z",
      "cve": "CVE-2026-64131",
      "id": "CVE-2026-64131",
      "initial_release_date": "2026-07-21T12:59:08Z",
      "product_status:known_affected": "482",
      "product_status:known_not_affected": "251",
      "product_status:recommended": "107",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64131",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64131.json",
      "version": "12"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.