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CVE-2023-54024 (GCVE-0-2023-54024)

Vulnerability from cvelistv5 – Published: 2025-12-24 10:55 – Updated: 2026-05-23 15:32
VLAI
Title
KVM: Destroy target device if coalesced MMIO unregistration fails
Summary
In the Linux kernel, the following vulnerability has been resolved: KVM: Destroy target device if coalesced MMIO unregistration fails Destroy and free the target coalesced MMIO device if unregistering said device fails. As clearly noted in the code, kvm_io_bus_unregister_dev() does not destroy the target device. BUG: memory leak unreferenced object 0xffff888112a54880 (size 64): comm "syz-executor.2", pid 5258, jiffies 4297861402 (age 14.129s) hex dump (first 32 bytes): 38 c7 67 15 00 c9 ff ff 38 c7 67 15 00 c9 ff ff 8.g.....8.g..... e0 c7 e1 83 ff ff ff ff 00 30 67 15 00 c9 ff ff .........0g..... backtrace: [<0000000006995a8a>] kmalloc include/linux/slab.h:556 [inline] [<0000000006995a8a>] kzalloc include/linux/slab.h:690 [inline] [<0000000006995a8a>] kvm_vm_ioctl_register_coalesced_mmio+0x8e/0x3d0 arch/x86/kvm/../../../virt/kvm/coalesced_mmio.c:150 [<00000000022550c2>] kvm_vm_ioctl+0x47d/0x1600 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3323 [<000000008a75102f>] vfs_ioctl fs/ioctl.c:46 [inline] [<000000008a75102f>] file_ioctl fs/ioctl.c:509 [inline] [<000000008a75102f>] do_vfs_ioctl+0xbab/0x1160 fs/ioctl.c:696 [<0000000080e3f669>] ksys_ioctl+0x76/0xa0 fs/ioctl.c:713 [<0000000059ef4888>] __do_sys_ioctl fs/ioctl.c:720 [inline] [<0000000059ef4888>] __se_sys_ioctl fs/ioctl.c:718 [inline] [<0000000059ef4888>] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:718 [<000000006444fa05>] do_syscall_64+0x9f/0x4e0 arch/x86/entry/common.c:290 [<000000009a4ed50b>] entry_SYSCALL_64_after_hwframe+0x49/0xbe BUG: leak checking failed
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7d1bc32d6477ff96a32695ea4be8144e4513ab2d , < 10c2a20d73e99463e69b7e92706791656adc16d7 (git)
Affected: 2a20592baff59c5351c5200ec667e1a2aa22af85 , < 76a9886e1b61ce5592df5ae78a19ed30399ae189 (git)
Affected: 5d3c4c79384af06e3c8e25b7770b6247496b4417 , < 999439fd5da5a76253e2f2c37b94204f47d75491 (git)
Affected: 5d3c4c79384af06e3c8e25b7770b6247496b4417 , < ccf6a7fb1aedb1472e1241ee55e4d26b68f8d066 (git)
Affected: 5d3c4c79384af06e3c8e25b7770b6247496b4417 , < fb436dd6914325075f07d19851ab277b7a693ae7 (git)
Affected: 5d3c4c79384af06e3c8e25b7770b6247496b4417 , < b1cb1fac22abf102ffeb29dd3eeca208a3869d54 (git)
Affected: 168e82f640ed1891a700bdb43e37da354b2ab63c (git)
Affected: 50cbad42bfea8c052b7ca590bd4126cdc898713c (git)
Affected: 5.4.119 , < 5.4.235 (semver)
Affected: 5.10.37 , < 5.10.173 (semver)
Affected: 5.11.21 , < 5.12 (semver)
Affected: 5.12.4 , < 5.13 (semver)
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Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 5.4.235 , ≤ 5.4.* (semver)
Unaffected: 5.10.173 , ≤ 5.10.* (semver)
Unaffected: 5.15.99 , ≤ 5.15.* (semver)
Unaffected: 6.1.16 , ≤ 6.1.* (semver)
Unaffected: 6.2.3 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
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{
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        {
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: Destroy target device if coalesced MMIO unregistration fails\n\nDestroy and free the target coalesced MMIO device if unregistering said\ndevice fails.  As clearly noted in the code, kvm_io_bus_unregister_dev()\ndoes not destroy the target device.\n\n  BUG: memory leak\n  unreferenced object 0xffff888112a54880 (size 64):\n    comm \"syz-executor.2\", pid 5258, jiffies 4297861402 (age 14.129s)\n    hex dump (first 32 bytes):\n      38 c7 67 15 00 c9 ff ff 38 c7 67 15 00 c9 ff ff  8.g.....8.g.....\n      e0 c7 e1 83 ff ff ff ff 00 30 67 15 00 c9 ff ff  .........0g.....\n    backtrace:\n      [\u003c0000000006995a8a\u003e] kmalloc include/linux/slab.h:556 [inline]\n      [\u003c0000000006995a8a\u003e] kzalloc include/linux/slab.h:690 [inline]\n      [\u003c0000000006995a8a\u003e] kvm_vm_ioctl_register_coalesced_mmio+0x8e/0x3d0 arch/x86/kvm/../../../virt/kvm/coalesced_mmio.c:150\n      [\u003c00000000022550c2\u003e] kvm_vm_ioctl+0x47d/0x1600 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3323\n      [\u003c000000008a75102f\u003e] vfs_ioctl fs/ioctl.c:46 [inline]\n      [\u003c000000008a75102f\u003e] file_ioctl fs/ioctl.c:509 [inline]\n      [\u003c000000008a75102f\u003e] do_vfs_ioctl+0xbab/0x1160 fs/ioctl.c:696\n      [\u003c0000000080e3f669\u003e] ksys_ioctl+0x76/0xa0 fs/ioctl.c:713\n      [\u003c0000000059ef4888\u003e] __do_sys_ioctl fs/ioctl.c:720 [inline]\n      [\u003c0000000059ef4888\u003e] __se_sys_ioctl fs/ioctl.c:718 [inline]\n      [\u003c0000000059ef4888\u003e] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:718\n      [\u003c000000006444fa05\u003e] do_syscall_64+0x9f/0x4e0 arch/x86/entry/common.c:290\n      [\u003c000000009a4ed50b\u003e] entry_SYSCALL_64_after_hwframe+0x49/0xbe\n\n  BUG: leak checking failed"
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        },
        {
          "url": "https://git.kernel.org/stable/c/b1cb1fac22abf102ffeb29dd3eeca208a3869d54"
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      "title": "KVM: Destroy target device if coalesced MMIO unregistration fails",
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    "dateReserved": "2025-12-24T10:53:46.179Z",
    "dateUpdated": "2026-05-23T15:32:02.641Z",
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      "date": "2026-09-18",
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: Destroy target device if coalesced MMIO unregistration fails\n\nDestroy and free the target coalesced MMIO device if unregistering said\ndevice fails.  As clearly noted in the code, kvm_io_bus_unregister_dev()\ndoes not destroy the target device.\n\n  BUG: memory leak\n  unreferenced object 0xffff888112a54880 (size 64):\n    comm \"syz-executor.2\", pid 5258, jiffies 4297861402 (age 14.129s)\n    hex dump (first 32 bytes):\n      38 c7 67 15 00 c9 ff ff 38 c7 67 15 00 c9 ff ff  8.g.....8.g.....\n      e0 c7 e1 83 ff ff ff ff 00 30 67 15 00 c9 ff ff  .........0g.....\n    backtrace:\n      [\u003c0000000006995a8a\u003e] kmalloc include/linux/slab.h:556 [inline]\n      [\u003c0000000006995a8a\u003e] kzalloc include/linux/slab.h:690 [inline]\n      [\u003c0000000006995a8a\u003e] kvm_vm_ioctl_register_coalesced_mmio+0x8e/0x3d0 arch/x86/kvm/../../../virt/kvm/coalesced_mmio.c:150\n      [\u003c00000000022550c2\u003e] kvm_vm_ioctl+0x47d/0x1600 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3323\n      [\u003c000000008a75102f\u003e] vfs_ioctl fs/ioctl.c:46 [inline]\n      [\u003c000000008a75102f\u003e] file_ioctl fs/ioctl.c:509 [inline]\n      [\u003c000000008a75102f\u003e] do_vfs_ioctl+0xbab/0x1160 fs/ioctl.c:696\n      [\u003c0000000080e3f669\u003e] ksys_ioctl+0x76/0xa0 fs/ioctl.c:713\n      [\u003c0000000059ef4888\u003e] __do_sys_ioctl fs/ioctl.c:720 [inline]\n      [\u003c0000000059ef4888\u003e] __se_sys_ioctl fs/ioctl.c:718 [inline]\n      [\u003c0000000059ef4888\u003e] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:718\n      [\u003c000000006444fa05\u003e] do_syscall_64+0x9f/0x4e0 arch/x86/entry/common.c:290\n      [\u003c000000009a4ed50b\u003e] entry_SYSCALL_64_after_hwframe+0x49/0xbe\n\n  BUG: leak checking failed"
          }
        ],
        "id": "CVE-2023-54024",
        "lastModified": "2026-06-17T06:46:33.507",
        "metrics": {},
        "published": "2025-12-24T11:15:55.403",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/10c2a20d73e99463e69b7e92706791656adc16d7"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/76a9886e1b61ce5592df5ae78a19ed30399ae189"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/999439fd5da5a76253e2f2c37b94204f47d75491"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/b1cb1fac22abf102ffeb29dd3eeca208a3869d54"
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ccf6a7fb1aedb1472e1241ee55e4d26b68f8d066"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/fb436dd6914325075f07d19851ab277b7a693ae7"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-07-21T19:13:39+00:00",
      "cve": "CVE-2023-54024",
      "id": "CVE-2023-54024",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_affected": "108",
      "product_status:known_not_affected": "166",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel KVM: Memory leak via coalesced MMIO unregistration failure",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-54024.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T02:04:24Z",
      "cve": "CVE-2023-54024",
      "id": "CVE-2023-54024",
      "initial_release_date": "2025-12-25T00:57:26Z",
      "product_status:known_affected": "354",
      "product_status:known_not_affected": "423",
      "product_status:recommended": "243",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-54024",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-54024.json",
      "version": "26"
    }
  }
}



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Taxonomy of the tags.





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.


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.