cve-2024-56624
Vulnerability from cvelistv5
Published
2024-12-27 14:51
Modified
2025-01-20 06:24
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: iommufd: Fix out_fput in iommufd_fault_alloc() As fput() calls the file->f_op->release op, where fault obj and ictx are getting released, there is no need to release these two after fput() one more time, which would result in imbalanced refcounts: refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 48 PID: 2369 at lib/refcount.c:31 refcount_warn_saturate+0x60/0x230 Call trace: refcount_warn_saturate+0x60/0x230 (P) refcount_warn_saturate+0x60/0x230 (L) iommufd_fault_fops_release+0x9c/0xe0 [iommufd] ... VFS: Close: file count is 0 (f_op=iommufd_fops [iommufd]) WARNING: CPU: 48 PID: 2369 at fs/open.c:1507 filp_flush+0x3c/0xf0 Call trace: filp_flush+0x3c/0xf0 (P) filp_flush+0x3c/0xf0 (L) __arm64_sys_close+0x34/0x98 ... imbalanced put on file reference count WARNING: CPU: 48 PID: 2369 at fs/file.c:74 __file_ref_put+0x100/0x138 Call trace: __file_ref_put+0x100/0x138 (P) __file_ref_put+0x100/0x138 (L) __fput_sync+0x4c/0xd0 Drop those two lines to fix the warnings above.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2b3f30c8edbf9a122ce01f13f0f41fbca5f1d41d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/af7f4780514f850322b2959032ecaa96e4b26472
Impacted products
Vendor Product Version
Linux Linux Version: 07838f7fd529c8a6de44b601d4b7057e6c8d36ed
Version: 07838f7fd529c8a6de44b601d4b7057e6c8d36ed
 Create a notification for this product.
   Linux Linux Version: 6.11
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/iommufd/fault.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2b3f30c8edbf9a122ce01f13f0f41fbca5f1d41d",
              "status": "affected",
              "version": "07838f7fd529c8a6de44b601d4b7057e6c8d36ed",
              "versionType": "git"
            },
            {
              "lessThan": "af7f4780514f850322b2959032ecaa96e4b26472",
              "status": "affected",
              "version": "07838f7fd529c8a6de44b601d4b7057e6c8d36ed",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/iommufd/fault.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "lessThan": "6.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Fix out_fput in iommufd_fault_alloc()\n\nAs fput() calls the file-\u003ef_op-\u003erelease op, where fault obj and ictx are\ngetting released, there is no need to release these two after fput() one\nmore time, which would result in imbalanced refcounts:\n  refcount_t: decrement hit 0; leaking memory.\n  WARNING: CPU: 48 PID: 2369 at lib/refcount.c:31 refcount_warn_saturate+0x60/0x230\n  Call trace:\n   refcount_warn_saturate+0x60/0x230 (P)\n   refcount_warn_saturate+0x60/0x230 (L)\n   iommufd_fault_fops_release+0x9c/0xe0 [iommufd]\n  ...\n  VFS: Close: file count is 0 (f_op=iommufd_fops [iommufd])\n  WARNING: CPU: 48 PID: 2369 at fs/open.c:1507 filp_flush+0x3c/0xf0\n  Call trace:\n   filp_flush+0x3c/0xf0 (P)\n   filp_flush+0x3c/0xf0 (L)\n   __arm64_sys_close+0x34/0x98\n  ...\n  imbalanced put on file reference count\n  WARNING: CPU: 48 PID: 2369 at fs/file.c:74 __file_ref_put+0x100/0x138\n  Call trace:\n   __file_ref_put+0x100/0x138 (P)\n   __file_ref_put+0x100/0x138 (L)\n   __fput_sync+0x4c/0xd0\n\nDrop those two lines to fix the warnings above."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-01-20T06:24:22.938Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2b3f30c8edbf9a122ce01f13f0f41fbca5f1d41d"
        },
        {
          "url": "https://git.kernel.org/stable/c/af7f4780514f850322b2959032ecaa96e4b26472"
        }
      ],
      "title": "iommufd: Fix out_fput in iommufd_fault_alloc()",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56624",
    "datePublished": "2024-12-27T14:51:27.318Z",
    "dateReserved": "2024-12-27T14:03:06.017Z",
    "dateUpdated": "2025-01-20T06:24:22.938Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-56624\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-12-27T15:15:21.933\",\"lastModified\":\"2024-12-27T15:15:21.933\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\niommufd: Fix out_fput in iommufd_fault_alloc()\\n\\nAs fput() calls the file-\u003ef_op-\u003erelease op, where fault obj and ictx are\\ngetting released, there is no need to release these two after fput() one\\nmore time, which would result in imbalanced refcounts:\\n  refcount_t: decrement hit 0; leaking memory.\\n  WARNING: CPU: 48 PID: 2369 at lib/refcount.c:31 refcount_warn_saturate+0x60/0x230\\n  Call trace:\\n   refcount_warn_saturate+0x60/0x230 (P)\\n   refcount_warn_saturate+0x60/0x230 (L)\\n   iommufd_fault_fops_release+0x9c/0xe0 [iommufd]\\n  ...\\n  VFS: Close: file count is 0 (f_op=iommufd_fops [iommufd])\\n  WARNING: CPU: 48 PID: 2369 at fs/open.c:1507 filp_flush+0x3c/0xf0\\n  Call trace:\\n   filp_flush+0x3c/0xf0 (P)\\n   filp_flush+0x3c/0xf0 (L)\\n   __arm64_sys_close+0x34/0x98\\n  ...\\n  imbalanced put on file reference count\\n  WARNING: CPU: 48 PID: 2369 at fs/file.c:74 __file_ref_put+0x100/0x138\\n  Call trace:\\n   __file_ref_put+0x100/0x138 (P)\\n   __file_ref_put+0x100/0x138 (L)\\n   __fput_sync+0x4c/0xd0\\n\\nDrop those two lines to fix the warnings above.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2b3f30c8edbf9a122ce01f13f0f41fbca5f1d41d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/af7f4780514f850322b2959032ecaa96e4b26472\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.