CVE-2024-56775
Vulnerability from cvelistv5
Published
2025-01-08 17:49
Modified
2025-01-08 17:49
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix handling of plane refcount [Why] The mechanism to backup and restore plane states doesn't maintain refcount, which can cause issues if the refcount of the plane changes in between backup and restore operations, such as memory leaks if the refcount was supposed to go down, or double frees / invalid memory accesses if the refcount was supposed to go up. [How] Cache and re-apply current refcount when restoring plane states.
Impacted products
Vendor Product Version
Linux Linux
Show details on NVD website


{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/core/dc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "8cb2f6793845f135b28361ba8e96901cae3e5790",
              "status": "affected",
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              "versionType": "git"
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        {
          "defaultStatus": "affected",
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          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/core/dc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13-rc1",
              "versionType": "original_commit_for_fix"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix handling of plane refcount\n\n[Why]\nThe mechanism to backup and restore plane states doesn\u0027t maintain\nrefcount, which can cause issues if the refcount of the plane changes\nin between backup and restore operations, such as memory leaks if the\nrefcount was supposed to go down, or double frees / invalid memory\naccesses if the refcount was supposed to go up.\n\n[How]\nCache and re-apply current refcount when restoring plane states."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-01-08T17:49:13.907Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8cb2f6793845f135b28361ba8e96901cae3e5790"
        },
        {
          "url": "https://git.kernel.org/stable/c/27227a234c1487cb7a684615f0749c455218833a"
        }
      ],
      "title": "drm/amd/display: Fix handling of plane refcount",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56775",
    "datePublished": "2025-01-08T17:49:13.907Z",
    "dateReserved": "2024-12-29T11:26:39.766Z",
    "dateUpdated": "2025-01-08T17:49:13.907Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-56775\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-01-08T18:15:18.333\",\"lastModified\":\"2025-01-08T18:15:18.333\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/amd/display: Fix handling of plane refcount\\n\\n[Why]\\nThe mechanism to backup and restore plane states doesn\u0027t maintain\\nrefcount, which can cause issues if the refcount of the plane changes\\nin between backup and restore operations, such as memory leaks if the\\nrefcount was supposed to go down, or double frees / invalid memory\\naccesses if the refcount was supposed to go up.\\n\\n[How]\\nCache and re-apply current refcount when restoring plane states.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/27227a234c1487cb7a684615f0749c455218833a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8cb2f6793845f135b28361ba8e96901cae3e5790\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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