Vulnerability-Lookup

GHSA-X86R-325J-5WQ6

Vulnerability from github – Published: 2026-07-01 15:35 – Updated: 2026-07-01 15:35

Details

In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Fix out-of-bounds read in dp_get_eq_aux_rd_interval()

[Why & How] The aux_rd_interval array in struct dc_lttpr_caps is declared with MAX_REPEATER_CNT - 1 (7) elements, indexed 0..6. However, the offset parameter passed to dp_get_eq_aux_rd_interval() can be as large as MAX_REPEATER_CNT (8) when a sink reports 8 LTTPR repeaters via DPCD. This leads to an out-of-bounds read of aux_rd_interval[7] when offset is 8.

Fix this by growing aux_rd_interval to MAX_REPEATER_CNT elements to accommodate the full range of valid repeater counts defined by the DP spec.

(cherry picked from commit a55a458a8df37a65ffda5cf721d554a8f74f6b04)

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53330"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-01T14:16:40Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix out-of-bounds read in dp_get_eq_aux_rd_interval()\n\n[Why \u0026 How]\nThe aux_rd_interval array in struct dc_lttpr_caps is declared with\nMAX_REPEATER_CNT - 1 (7) elements, indexed 0..6. However, the offset\nparameter passed to dp_get_eq_aux_rd_interval() can be as large as\nMAX_REPEATER_CNT (8) when a sink reports 8 LTTPR repeaters via DPCD.\nThis leads to an out-of-bounds read of aux_rd_interval[7] when offset\nis 8.\n\nFix this by growing aux_rd_interval to MAX_REPEATER_CNT elements to\naccommodate the full range of valid repeater counts defined by the DP\nspec.\n\n(cherry picked from commit a55a458a8df37a65ffda5cf721d554a8f74f6b04)",
  "id": "GHSA-x86r-325j-5wq6",
  "modified": "2026-07-01T15:35:19Z",
  "published": "2026-07-01T15:35:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53330"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/454d3b3d499c18373f8960d31aea48338a3ca9e0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dc1490927d79fe9621e29f4a4f5d7b5ccb6aea3e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e8b4d37eba05141ee01794fc6b7f2da808cee83b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-53330 (GCVE-0-2026-53330)

Vulnerability from cvelistv5 – Published: 2026-07-01 13:32 – Updated: 2026-07-01 13:32

Title

drm/amd/display: Fix out-of-bounds read in dp_get_eq_aux_rd_interval()

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix out-of-bounds read in dp_get_eq_aux_rd_interval() [Why & How] The aux_rd_interval array in struct dc_lttpr_caps is declared with MAX_REPEATER_CNT - 1 (7) elements, indexed 0..6. However, the offset parameter passed to dp_get_eq_aux_rd_interval() can be as large as MAX_REPEATER_CNT (8) when a sink reports 8 LTTPR repeaters via DPCD. This leads to an out-of-bounds read of aux_rd_interval[7] when offset is 8. Fix this by growing aux_rd_interval to MAX_REPEATER_CNT elements to accommodate the full range of valid repeater counts defined by the DP spec. (cherry picked from commit a55a458a8df37a65ffda5cf721d554a8f74f6b04)

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/454d3b3d499c18373…
https://git.kernel.org/stable/c/dc1490927d79fe962…
https://git.kernel.org/stable/c/e8b4d37eba05141ee…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 454d3b3d499c18373f8960d31aea48338a3ca9e0 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < dc1490927d79fe9621e29f4a4f5d7b5ccb6aea3e (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e8b4d37eba05141ee01794fc6b7f2da808cee83b (git) Affected: 0 , < 6.18.36 (semver) Affected: 0 , < 7.0.13 (semver)
Linux	Linux	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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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/dc_dp_types.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "454d3b3d499c18373f8960d31aea48338a3ca9e0",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
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              "status": "affected",
              "version": "0",
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/dc_dp_types.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.36",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "7.0.13",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "7.1",
                  "vulnerable": true
                }
              ],
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              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix out-of-bounds read in dp_get_eq_aux_rd_interval()\n\n[Why \u0026 How]\nThe aux_rd_interval array in struct dc_lttpr_caps is declared with\nMAX_REPEATER_CNT - 1 (7) elements, indexed 0..6. However, the offset\nparameter passed to dp_get_eq_aux_rd_interval() can be as large as\nMAX_REPEATER_CNT (8) when a sink reports 8 LTTPR repeaters via DPCD.\nThis leads to an out-of-bounds read of aux_rd_interval[7] when offset\nis 8.\n\nFix this by growing aux_rd_interval to MAX_REPEATER_CNT elements to\naccommodate the full range of valid repeater counts defined by the DP\nspec.\n\n(cherry picked from commit a55a458a8df37a65ffda5cf721d554a8f74f6b04)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-01T13:32:15.160Z",
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        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/dc1490927d79fe9621e29f4a4f5d7b5ccb6aea3e"
        },
        {
          "url": "https://git.kernel.org/stable/c/e8b4d37eba05141ee01794fc6b7f2da808cee83b"
        }
      ],
      "title": "drm/amd/display: Fix out-of-bounds read in dp_get_eq_aux_rd_interval()",
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    "cveId": "CVE-2026-53330",
    "datePublished": "2026-07-01T13:32:15.160Z",
    "dateReserved": "2026-06-09T07:44:35.398Z",
    "dateUpdated": "2026-07-01T13:32:15.160Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

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GHSA-X86R-325J-5WQ6

CVE-2026-53330 (GCVE-0-2026-53330)

Tags

Sightings

Nomenclature