CVE-2023-53236 (GCVE-0-2023-53236)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:22 – Updated: 2026-08-05 09:13
VLAI
Title
iommufd: Do not corrupt the pfn list when doing batch carry
Summary
In the Linux kernel, the following vulnerability has been resolved: iommufd: Do not corrupt the pfn list when doing batch carry If batch->end is 0 then setting npfns[0] before computing the new value of pfns will fail to adjust the pfn and result in various page accounting corruptions. It should be ordered after. This seems to result in various kinds of page meta-data corruption related failures: WARNING: CPU: 1 PID: 527 at mm/gup.c:75 try_grab_folio+0x503/0x740 Modules linked in: CPU: 1 PID: 527 Comm: repro Not tainted 6.3.0-rc2-eeac8ede1755+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 RIP: 0010:try_grab_folio+0x503/0x740 Code: e3 01 48 89 de e8 6d c1 dd ff 48 85 db 0f 84 7c fe ff ff e8 4f bf dd ff 49 8d 47 ff 48 89 45 d0 e9 73 fe ff ff e8 3d bf dd ff <0f> 0b 31 db e9 d0 fc ff ff e8 2f bf dd ff 48 8b 5d c8 31 ff 48 89 RSP: 0018:ffffc90000f37908 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 00000000fffffc02 RCX: ffffffff81504c26 RDX: 0000000000000000 RSI: ffff88800d030000 RDI: 0000000000000002 RBP: ffffc90000f37948 R08: 000000000003ca24 R09: 0000000000000008 R10: 000000000003ca00 R11: 0000000000000023 R12: ffffea000035d540 R13: 0000000000000001 R14: 0000000000000000 R15: ffffea000035d540 FS: 00007fecbf659740(0000) GS:ffff88807dd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200011c3 CR3: 000000000ef66006 CR4: 0000000000770ee0 PKRU: 55555554 Call Trace: <TASK> internal_get_user_pages_fast+0xd32/0x2200 pin_user_pages_fast+0x65/0x90 pfn_reader_user_pin+0x376/0x390 pfn_reader_next+0x14a/0x7b0 pfn_reader_first+0x140/0x1b0 iopt_area_fill_domain+0x74/0x210 iopt_table_add_domain+0x30e/0x6e0 iommufd_device_selftest_attach+0x7f/0x140 iommufd_test+0x10ff/0x16f0 iommufd_fops_ioctl+0x206/0x330 __x64_sys_ioctl+0x10e/0x160 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f394576eb11dbcd3a740fa41e577b97f0720d26e , < 6ed5784526ddc0fb58b1798af36ec0c3139a8dca (git)
Affected: f394576eb11dbcd3a740fa41e577b97f0720d26e , < 13a0d1ae7ee6b438f5537711a8c60cba00554943 (git)
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Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 6.2.11 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
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              "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"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Do not corrupt the pfn list when doing batch carry\n\nIf batch-\u003eend is 0 then setting npfns[0] before computing the new value of\npfns will fail to adjust the pfn and result in various page accounting\ncorruptions. It should be ordered after.\n\nThis seems to result in various kinds of page meta-data corruption related\nfailures:\n\n  WARNING: CPU: 1 PID: 527 at mm/gup.c:75 try_grab_folio+0x503/0x740\n  Modules linked in:\n  CPU: 1 PID: 527 Comm: repro Not tainted 6.3.0-rc2-eeac8ede1755+ #1\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\n  RIP: 0010:try_grab_folio+0x503/0x740\n  Code: e3 01 48 89 de e8 6d c1 dd ff 48 85 db 0f 84 7c fe ff ff e8 4f bf dd ff 49 8d 47 ff 48 89 45 d0 e9 73 fe ff ff e8 3d bf dd ff \u003c0f\u003e 0b 31 db e9 d0 fc ff ff e8 2f bf dd ff 48 8b 5d c8 31 ff 48 89\n  RSP: 0018:ffffc90000f37908 EFLAGS: 00010046\n  RAX: 0000000000000000 RBX: 00000000fffffc02 RCX: ffffffff81504c26\n  RDX: 0000000000000000 RSI: ffff88800d030000 RDI: 0000000000000002\n  RBP: ffffc90000f37948 R08: 000000000003ca24 R09: 0000000000000008\n  R10: 000000000003ca00 R11: 0000000000000023 R12: ffffea000035d540\n  R13: 0000000000000001 R14: 0000000000000000 R15: ffffea000035d540\n  FS:  00007fecbf659740(0000) GS:ffff88807dd00000(0000) knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 00000000200011c3 CR3: 000000000ef66006 CR4: 0000000000770ee0\n  PKRU: 55555554\n  Call Trace:\n   \u003cTASK\u003e\n   internal_get_user_pages_fast+0xd32/0x2200\n   pin_user_pages_fast+0x65/0x90\n   pfn_reader_user_pin+0x376/0x390\n   pfn_reader_next+0x14a/0x7b0\n   pfn_reader_first+0x140/0x1b0\n   iopt_area_fill_domain+0x74/0x210\n   iopt_table_add_domain+0x30e/0x6e0\n   iommufd_device_selftest_attach+0x7f/0x140\n   iommufd_test+0x10ff/0x16f0\n   iommufd_fops_ioctl+0x206/0x330\n   __x64_sys_ioctl+0x10e/0x160\n   do_syscall_64+0x3b/0x90\n   entry_SYSCALL_64_after_hwframe+0x72/0xdc"
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              "value": "AV:L - The vulnerability is reached through ioctl on /dev/iommu (iommufd), a local miscdevice interface; the vulnerable batch_clear_carry path is not reachable from the network stack or remote protocols.\nAC:L - An attacker who can open iommufd and drive map/unmap plus device attach/detach with an overlapping access can reliably hit the carry path; success does not depend on races or other conditions outside the attacker\u0027s control.\nPR:L - Opening /dev/iommu requires only local device-node access (mode 0660, no capability check on open), and binding a normal IOMMU-backed VFIO device does not require CAP_SYS_RAWIO; this matches other iommufd CVEs scored PR:L.\nUI:N - Exploitation is performed solely by the attacker\u0027s own ioctls (IOAS map/unmap, device attach/detach/destroy); no separate victim action is required.\nS:U - The bug corrupts page pin accounting within the kernel\u0027s own memory management during unpin, enabling local privilege escalation; unlike overlapping-IOVA bugs it does not create a cross-boundary IOMMU/DMA isolation bypass.\nC:H - Incorrect pfn carry causes unpin_user_page_range_dirty_lock on the wrong pages, producing page-refcount corruption and use-after-free primitives that can be leveraged for arbitrary kernel memory disclosure.\nI:H - The same page-refcount corruption and UAF from wrong-page unpinning can be turned into arbitrary kernel writes and control-flow hijacking, consistent with guidance that memory-corruption/UAF bugs score Integrity High.\nA:H - The bug demonstrably triggers kernel WARNINGs in try_grab_folio and related carry failures cause oops/NULL derefs in batch_unpin, so availability impact is a full kernel crash."
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It should be ordered after.\\n\\nThis seems to result in various kinds of page meta-data corruption related\\nfailures:\\n\\n  WARNING: CPU: 1 PID: 527 at mm/gup.c:75 try_grab_folio+0x503/0x740\\n  Modules linked in:\\n  CPU: 1 PID: 527 Comm: repro Not tainted 6.3.0-rc2-eeac8ede1755+ #1\\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\\n  RIP: 0010:try_grab_folio+0x503/0x740\\n  Code: e3 01 48 89 de e8 6d c1 dd ff 48 85 db 0f 84 7c fe ff ff e8 4f bf dd ff 49 8d 47 ff 48 89 45 d0 e9 73 fe ff ff e8 3d bf dd ff \u003c0f\u003e 0b 31 db e9 d0 fc ff ff e8 2f bf dd ff 48 8b 5d c8 31 ff 48 89\\n  RSP: 0018:ffffc90000f37908 EFLAGS: 00010046\\n  RAX: 0000000000000000 RBX: 00000000fffffc02 RCX: ffffffff81504c26\\n  RDX: 0000000000000000 RSI: ffff88800d030000 RDI: 0000000000000002\\n  RBP: ffffc90000f37948 R08: 000000000003ca24 R09: 0000000000000008\\n  R10: 000000000003ca00 R11: 0000000000000023 R12: ffffea000035d540\\n  R13: 0000000000000001 R14: 0000000000000000 R15: ffffea000035d540\\n  FS:  00007fecbf659740(0000) GS:ffff88807dd00000(0000) knlGS:0000000000000000\\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n  CR2: 00000000200011c3 CR3: 000000000ef66006 CR4: 0000000000770ee0\\n  PKRU: 55555554\\n  Call Trace:\\n   \u003cTASK\u003e\\n   internal_get_user_pages_fast+0xd32/0x2200\\n   pin_user_pages_fast+0x65/0x90\\n   pfn_reader_user_pin+0x376/0x390\\n   pfn_reader_next+0x14a/0x7b0\\n   pfn_reader_first+0x140/0x1b0\\n   iopt_area_fill_domain+0x74/0x210\\n   iopt_table_add_domain+0x30e/0x6e0\\n   iommufd_device_selftest_attach+0x7f/0x140\\n   iommufd_test+0x10ff/0x16f0\\n   iommufd_fops_ioctl+0x206/0x330\\n   __x64_sys_ioctl+0x10e/0x160\\n   do_syscall_64+0x3b/0x90\\n   entry_SYSCALL_64_after_hwframe+0x72/0xdc\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/iommu/iommufd/pages.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"f394576eb11dbcd3a740fa41e577b97f0720d26e\",\"lessThan\":\"6ed5784526ddc0fb58b1798af36ec0c3139a8dca\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f394576eb11dbcd3a740fa41e577b97f0720d26e\",\"lessThan\":\"13a0d1ae7ee6b438f5537711a8c60cba00554943\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/iommu/iommufd/pages.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.2\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.2\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.2.11\",\"lessThanOrEqual\":\"6.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.3\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-01-14T17:56:30.391037Z\",\"id\":\"CVE-2023-53236\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T22:14:07+00:00",
      "cve": "CVE-2023-53236",
      "id": "CVE-2023-53236",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: iommufd: Do not corrupt the pfn list when doing batch carry",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53236.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-53236\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-14T17:56:30.391037Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-14T17:56:26.224Z\"}}], \"cna\": {\"title\": \"iommufd: Do not corrupt the pfn list when doing batch carry\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"f394576eb11dbcd3a740fa41e577b97f0720d26e\", \"lessThan\": \"6ed5784526ddc0fb58b1798af36ec0c3139a8dca\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f394576eb11dbcd3a740fa41e577b97f0720d26e\", \"lessThan\": \"13a0d1ae7ee6b438f5537711a8c60cba00554943\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/iommu/iommufd/pages.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.2\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.2\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.2.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.2.*\"}, {\"status\": \"unaffected\", \"version\": \"6.3\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/iommu/iommufd/pages.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/6ed5784526ddc0fb58b1798af36ec0c3139a8dca\"}, {\"url\": \"https://git.kernel.org/stable/c/13a0d1ae7ee6b438f5537711a8c60cba00554943\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\niommufd: Do not corrupt the pfn list when doing batch carry\\n\\nIf batch-\u003eend is 0 then setting npfns[0] before computing the new value of\\npfns will fail to adjust the pfn and result in various page accounting\\ncorruptions. It should be ordered after.\\n\\nThis seems to result in various kinds of page meta-data corruption related\\nfailures:\\n\\n  WARNING: CPU: 1 PID: 527 at mm/gup.c:75 try_grab_folio+0x503/0x740\\n  Modules linked in:\\n  CPU: 1 PID: 527 Comm: repro Not tainted 6.3.0-rc2-eeac8ede1755+ #1\\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\\n  RIP: 0010:try_grab_folio+0x503/0x740\\n  Code: e3 01 48 89 de e8 6d c1 dd ff 48 85 db 0f 84 7c fe ff ff e8 4f bf dd ff 49 8d 47 ff 48 89 45 d0 e9 73 fe ff ff e8 3d bf dd ff \u003c0f\u003e 0b 31 db e9 d0 fc ff ff e8 2f bf dd ff 48 8b 5d c8 31 ff 48 89\\n  RSP: 0018:ffffc90000f37908 EFLAGS: 00010046\\n  RAX: 0000000000000000 RBX: 00000000fffffc02 RCX: ffffffff81504c26\\n  RDX: 0000000000000000 RSI: ffff88800d030000 RDI: 0000000000000002\\n  RBP: ffffc90000f37948 R08: 000000000003ca24 R09: 0000000000000008\\n  R10: 000000000003ca00 R11: 0000000000000023 R12: ffffea000035d540\\n  R13: 0000000000000001 R14: 0000000000000000 R15: ffffea000035d540\\n  FS:  00007fecbf659740(0000) GS:ffff88807dd00000(0000) knlGS:0000000000000000\\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n  CR2: 00000000200011c3 CR3: 000000000ef66006 CR4: 0000000000770ee0\\n  PKRU: 55555554\\n  Call Trace:\\n   \u003cTASK\u003e\\n   internal_get_user_pages_fast+0xd32/0x2200\\n   pin_user_pages_fast+0x65/0x90\\n   pfn_reader_user_pin+0x376/0x390\\n   pfn_reader_next+0x14a/0x7b0\\n   pfn_reader_first+0x140/0x1b0\\n   iopt_area_fill_domain+0x74/0x210\\n   iopt_table_add_domain+0x30e/0x6e0\\n   iommufd_device_selftest_attach+0x7f/0x140\\n   iommufd_test+0x10ff/0x16f0\\n   iommufd_fops_ioctl+0x206/0x330\\n   __x64_sys_ioctl+0x10e/0x160\\n   do_syscall_64+0x3b/0x90\\n   entry_SYSCALL_64_after_hwframe+0x72/0xdc\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.2.11\", \"versionStartIncluding\": \"6.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.3\", \"versionStartIncluding\": \"6.2\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T19:40:52.554Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-53236\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T19:40:52.554Z\", \"dateReserved\": \"2025-09-15T14:19:21.847Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-09-15T14:22:09.250Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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

Author Source Type Date Other

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.