CVE-2026-53329 (GCVE-0-2026-53329)

Vulnerability from cvelistv5 – Published: 2026-07-01 13:32 – Updated: 2026-08-05 12:35
VLAI
Title
drm/amd/display: Use krealloc_array() in dal_vector_reserve()
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)
Severity
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 2004f45ef83f07f43f5da6ede780b08068c7583d , < 9540b0a4d13e4ede64ae1197d66a176d2149daa9 (git)
Affected: 2004f45ef83f07f43f5da6ede780b08068c7583d , < 31180638a33acad12c863132704a76536fb66211 (git)
Affected: 2004f45ef83f07f43f5da6ede780b08068c7583d , < b15825deac1acff72638bbc8f05b89ceef8dfb13 (git)
Affected: 2004f45ef83f07f43f5da6ede780b08068c7583d , < 201151e120f0062bcda21cad5d007b82725ad23b (git)
Affected: 2004f45ef83f07f43f5da6ede780b08068c7583d , < a914aa802669e073f014dae2e5708633b5cecd34 (git)
Affected: 2004f45ef83f07f43f5da6ede780b08068c7583d , < e09689286385a66311ac6922af95339d7a3cef8d (git)
Affected: 2004f45ef83f07f43f5da6ede780b08068c7583d , < de988c7a31f0774f07894cfe4802996f318e2870 (git)
Affected: 2004f45ef83f07f43f5da6ede780b08068c7583d , < da48bc4461b8a5ebfb9264c9b191a701d8e99009 (git)
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Linux Linux Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 5.10.260 , ≤ 5.10.* (semver)
Unaffected: 5.15.210 , ≤ 5.15.* (semver)
Unaffected: 6.1.176 , ≤ 6.1.* (semver)
Unaffected: 6.6.143 , ≤ 6.6.* (semver)
Unaffected: 6.12.94 , ≤ 6.12.* (semver)
Unaffected: 6.18.36 , ≤ 6.18.* (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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            "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": "2026-07-23T21:34:08.263",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.0,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.0,
              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-07-01T14:16:40.760",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/201151e120f0062bcda21cad5d007b82725ad23b"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/31180638a33acad12c863132704a76536fb66211"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/9540b0a4d13e4ede64ae1197d66a176d2149daa9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/a914aa802669e073f014dae2e5708633b5cecd34"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/b15825deac1acff72638bbc8f05b89ceef8dfb13"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/da48bc4461b8a5ebfb9264c9b191a701d8e99009"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/de988c7a31f0774f07894cfe4802996f318e2870"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/e09689286385a66311ac6922af95339d7a3cef8d"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-674"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-08-20T07:59:56+00:00",
      "cve": "CVE-2026-53329",
      "id": "CVE-2026-53329",
      "initial_release_date": "2026-07-01T00:00:00+00:00",
      "product_status:fixed": "762",
      "product_status:known_affected": "22",
      "product_status:known_not_affected": "28",
      "product_status:under_investigation": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/amd/display: Use krealloc_array() in dal_vector_reserve()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53329.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-10T02:37:29Z",
      "cve": "CVE-2026-53329",
      "id": "CVE-2026-53329",
      "initial_release_date": "2026-07-03T03:04:30Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "669",
      "product_status:known_not_affected": "35",
      "product_status:recommended": "352",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-53329",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-53329.json",
      "version": "11"
    }
  }
}



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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

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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.
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  • 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.



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.