cve-2024-26785
Vulnerability from cvelistv5
Published
2024-04-04 08:20
Modified
2024-08-02 00:14
Severity
Summary
iommufd: Fix protection fault in iommufd_test_syz_conv_iova
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cf7c2789822db8b5efa34f5ebcf1621bc0008d48
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fc719ecbca45c9c046640d72baddba3d83e0bc0b
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-26785",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-04-04T15:19:21.902975Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:48:39.554Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T00:14:13.352Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/fc719ecbca45c9c046640d72baddba3d83e0bc0b"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/cf7c2789822db8b5efa34f5ebcf1621bc0008d48"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/iommufd/selftest.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fc719ecbca45",
              "status": "affected",
              "version": "9227da7816dd",
              "versionType": "git"
            },
            {
              "lessThan": "cf7c2789822d",
              "status": "affected",
              "version": "9227da7816dd",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/iommufd/selftest.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.6"
            },
            {
              "lessThan": "6.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "6.7.*",
              "status": "unaffected",
              "version": "6.7.9",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.8",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Fix protection fault in iommufd_test_syz_conv_iova\n\nSyzkaller reported the following bug:\n\n  general protection fault, probably for non-canonical address 0xdffffc0000000038: 0000 [#1] SMP KASAN\n  KASAN: null-ptr-deref in range [0x00000000000001c0-0x00000000000001c7]\n  Call Trace:\n   lock_acquire\n   lock_acquire+0x1ce/0x4f0\n   down_read+0x93/0x4a0\n   iommufd_test_syz_conv_iova+0x56/0x1f0\n   iommufd_test_access_rw.isra.0+0x2ec/0x390\n   iommufd_test+0x1058/0x1e30\n   iommufd_fops_ioctl+0x381/0x510\n   vfs_ioctl\n   __do_sys_ioctl\n   __se_sys_ioctl\n   __x64_sys_ioctl+0x170/0x1e0\n   do_syscall_x64\n   do_syscall_64+0x71/0x140\n\nThis is because the new iommufd_access_change_ioas() sets access-\u003eioas to\nNULL during its process, so the lock might be gone in a concurrent racing\ncontext.\n\nFix this by doing the same access-\u003eioas sanity as iommufd_access_rw() and\niommufd_access_pin_pages() functions do."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-05-29T05:22:41.041Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fc719ecbca45c9c046640d72baddba3d83e0bc0b"
        },
        {
          "url": "https://git.kernel.org/stable/c/cf7c2789822db8b5efa34f5ebcf1621bc0008d48"
        }
      ],
      "title": "iommufd: Fix protection fault in iommufd_test_syz_conv_iova",
      "x_generator": {
        "engine": "bippy-a5840b7849dd"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26785",
    "datePublished": "2024-04-04T08:20:18.467Z",
    "dateReserved": "2024-02-19T14:20:24.178Z",
    "dateUpdated": "2024-08-02T00:14:13.352Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26785\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-04T09:15:08.187\",\"lastModified\":\"2024-04-04T12:48:41.700\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\niommufd: Fix protection fault in iommufd_test_syz_conv_iova\\n\\nSyzkaller reported the following bug:\\n\\n  general protection fault, probably for non-canonical address 0xdffffc0000000038: 0000 [#1] SMP KASAN\\n  KASAN: null-ptr-deref in range [0x00000000000001c0-0x00000000000001c7]\\n  Call Trace:\\n   lock_acquire\\n   lock_acquire+0x1ce/0x4f0\\n   down_read+0x93/0x4a0\\n   iommufd_test_syz_conv_iova+0x56/0x1f0\\n   iommufd_test_access_rw.isra.0+0x2ec/0x390\\n   iommufd_test+0x1058/0x1e30\\n   iommufd_fops_ioctl+0x381/0x510\\n   vfs_ioctl\\n   __do_sys_ioctl\\n   __se_sys_ioctl\\n   __x64_sys_ioctl+0x170/0x1e0\\n   do_syscall_x64\\n   do_syscall_64+0x71/0x140\\n\\nThis is because the new iommufd_access_change_ioas() sets access-\u003eioas to\\nNULL during its process, so the lock might be gone in a concurrent racing\\ncontext.\\n\\nFix this by doing the same access-\u003eioas sanity as iommufd_access_rw() and\\niommufd_access_pin_pages() functions do.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: iommufd: Se corrigi\u00f3 falla de protecci\u00f3n en iommufd_test_syz_conv_iova Syzkaller inform\u00f3 el siguiente error: falla de protecci\u00f3n general, probablemente para direcci\u00f3n no can\u00f3nica 0xdffffc0000000038: 0000 [#1] SMP KASAN KASAN: null-ptr- deref en el rango [0x00000000000001c0-0x00000000000001c7] Seguimiento de llamadas: lock_acquire lock_acquire+0x1ce/0x4f0 down_read+0x93/0x4a0 iommufd_test_syz_conv_iova+0x56/0x1f0 iommufd_test_access_rw.isra. 0+0x2ec/0x390 iommufd_test+0x1058/0x1e30 iommufd_fops_ioctl+0x381/0x510 vfs_ioctl __do_sys_ioctl __se_sys_ioctl __x64_sys_ioctl +0x170/0x1e0 do_syscall_x64 do_syscall_64+0x71/0x140 Esto se debe a que el nuevo iommufd_access_change_ioas() establece access-\u0026gt;ioas en NULL durante su proceso, por lo que el bloqueo podr\u00eda desaparecer en un contexto de ejecuci\u00f3n concurrente. Solucione este problema haciendo el mismo acceso-\u0026gt;ioas cordura que hacen las funciones iommufd_access_rw() y iommufd_access_pin_pages().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/cf7c2789822db8b5efa34f5ebcf1621bc0008d48\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fc719ecbca45c9c046640d72baddba3d83e0bc0b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.