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

Vulnerability from cvelistv5 – Published: 2026-07-01 13:32 – Updated: 2026-07-01 13:32
VLAI?
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
References
Impacted 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)
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    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": {
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          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/dc_dp_types.h"
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              "operator": "OR"
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      ],
      "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",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "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"
}


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