FKIE_CVE-2026-53329

Vulnerability from fkie_nvd - Published: 2026-07-01 14:16 - Updated: 2026-07-01 14:16
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Use krealloc_array() in dal_vector_reserve() [Why & How] dal_vector_reserve() computes the allocation size as "capacity * vector->struct_size" using uint32_t arithmetic, which can silently wrap to a small value on overflow. This would cause krealloc to return a smaller buffer than expected, leading to heap overflows on subsequent vector appends. Replace krealloc() with krealloc_array() which performs an internal overflow check and returns NULL on wrap, preventing the issue. (cherry picked from commit 37668568641ccc4cc1dbca4923d0a16609dd5707)
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/201151e120f0062bcda21cad5d007b82725ad23b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/31180638a33acad12c863132704a76536fb66211
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a914aa802669e073f014dae2e5708633b5cecd34
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b15825deac1acff72638bbc8f05b89ceef8dfb13
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/da48bc4461b8a5ebfb9264c9b191a701d8e99009
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/de988c7a31f0774f07894cfe4802996f318e2870
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e09689286385a66311ac6922af95339d7a3cef8d
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/basics/vector.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "31180638a33acad12c863132704a76536fb66211",
              "status": "affected",
              "version": "2004f45ef83f07f43f5da6ede780b08068c7583d",
              "versionType": "git"
            },
            {
              "lessThan": "b15825deac1acff72638bbc8f05b89ceef8dfb13",
              "status": "affected",
              "version": "2004f45ef83f07f43f5da6ede780b08068c7583d",
              "versionType": "git"
            },
            {
              "lessThan": "201151e120f0062bcda21cad5d007b82725ad23b",
              "status": "affected",
              "version": "2004f45ef83f07f43f5da6ede780b08068c7583d",
              "versionType": "git"
            },
            {
              "lessThan": "a914aa802669e073f014dae2e5708633b5cecd34",
              "status": "affected",
              "version": "2004f45ef83f07f43f5da6ede780b08068c7583d",
              "versionType": "git"
            },
            {
              "lessThan": "e09689286385a66311ac6922af95339d7a3cef8d",
              "status": "affected",
              "version": "2004f45ef83f07f43f5da6ede780b08068c7583d",
              "versionType": "git"
            },
            {
              "lessThan": "de988c7a31f0774f07894cfe4802996f318e2870",
              "status": "affected",
              "version": "2004f45ef83f07f43f5da6ede780b08068c7583d",
              "versionType": "git"
            },
            {
              "lessThan": "da48bc4461b8a5ebfb9264c9b191a701d8e99009",
              "status": "affected",
              "version": "2004f45ef83f07f43f5da6ede780b08068c7583d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/basics/vector.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.15"
            },
            {
              "lessThan": "4.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.210",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.176",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.94",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Use krealloc_array() in dal_vector_reserve()\n\n[Why \u0026 How]\ndal_vector_reserve() computes the allocation size as\n\"capacity * vector-\u003estruct_size\" using uint32_t arithmetic, which can\nsilently wrap to a small value on overflow. This would cause krealloc to\nreturn a smaller buffer than expected, leading to heap overflows on\nsubsequent vector appends.\n\nReplace krealloc() with krealloc_array() which performs an internal\noverflow check and returns NULL on wrap, preventing the issue.\n\n(cherry picked from commit 37668568641ccc4cc1dbca4923d0a16609dd5707)"
    }
  ],
  "id": "CVE-2026-53329",
  "lastModified": "2026-07-01T14:16:40.760",
  "metrics": {},
  "published": "2026-07-01T14:16:40.760",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/201151e120f0062bcda21cad5d007b82725ad23b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/31180638a33acad12c863132704a76536fb66211"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a914aa802669e073f014dae2e5708633b5cecd34"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b15825deac1acff72638bbc8f05b89ceef8dfb13"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/da48bc4461b8a5ebfb9264c9b191a701d8e99009"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/de988c7a31f0774f07894cfe4802996f318e2870"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e09689286385a66311ac6922af95339d7a3cef8d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}


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