CVE-2026-53058 (GCVE-0-2026-53058)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:30 – Updated: 2026-06-24 16:30
VLAI
Title
drm/bridge: cadence: cdns-mhdp8546-core: Set the mhdp connector earlier in atomic_enable()
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/bridge: cadence: cdns-mhdp8546-core: Set the mhdp connector earlier in atomic_enable() In case if we get errors in cdns_mhdp_link_up() or cdns_mhdp_reg_read() in atomic_enable, we will go to cdns_mhdp_modeset_retry_fn() and will hit NULL pointer while trying to access the mutex. We need the connector to be set before that. Unlike in legacy cases with flag !DRM_BRIDGE_ATTACH_NO_CONNECTOR, we do not have connector initialised in bridge_attach(), so add the mhdp->connector_ptr in device structure to handle both cases with DRM_BRIDGE_ATTACH_NO_CONNECTOR and !DRM_BRIDGE_ATTACH_NO_CONNECTOR, set it in atomic_enable() earlier to avoid possible NULL pointer dereference in recovery paths like modeset_retry_fn() with the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag set.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: c932ced6b58524eeb948ff252f6512cd6bcb9d9f , < 5302015daf26ef6b48e067f2b86c9482ac19e015 (git)
Affected: c932ced6b58524eeb948ff252f6512cd6bcb9d9f , < a3611554e599d1a24b45fd8415bacb72ce861e4b (git)
Affected: c932ced6b58524eeb948ff252f6512cd6bcb9d9f , < cf2ac2cac8b319f89b3a3851ca0c5ffb6a549575 (git)
Affected: c932ced6b58524eeb948ff252f6512cd6bcb9d9f , < 1af3b42e08a957e53bab8e1897393fe0a27d9fbf (git)
Affected: c932ced6b58524eeb948ff252f6512cd6bcb9d9f , < 43d6508ddbf9fb974fbc359a033154f78c9d4c8b (git)
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Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.6.141 , ≤ 6.6.* (semver)
Unaffected: 6.12.91 , ≤ 6.12.* (semver)
Unaffected: 6.18.33 , ≤ 6.18.* (semver)
Unaffected: 7.0.10 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c",
            "drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.h",
            "drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-hdcp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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            "drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.h",
            "drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-hdcp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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              "versionType": "semver"
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      "cpeApplicability": [
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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/bridge: cadence: cdns-mhdp8546-core: Set the mhdp connector earlier in atomic_enable()\n\nIn case if we get errors in cdns_mhdp_link_up() or cdns_mhdp_reg_read()\nin atomic_enable, we will go to cdns_mhdp_modeset_retry_fn() and will hit\nNULL pointer while trying to access the mutex. We need the connector to\nbe set before that. Unlike in legacy cases with flag\n!DRM_BRIDGE_ATTACH_NO_CONNECTOR, we do not have connector initialised\nin bridge_attach(), so add the mhdp-\u003econnector_ptr in device structure\nto handle both cases with DRM_BRIDGE_ATTACH_NO_CONNECTOR and\n!DRM_BRIDGE_ATTACH_NO_CONNECTOR, set it in atomic_enable() earlier to\navoid possible NULL pointer dereference in recovery paths like\nmodeset_retry_fn() with the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag set."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-24T16:30:03.463Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5302015daf26ef6b48e067f2b86c9482ac19e015"
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          "url": "https://git.kernel.org/stable/c/a3611554e599d1a24b45fd8415bacb72ce861e4b"
        },
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          "url": "https://git.kernel.org/stable/c/1af3b42e08a957e53bab8e1897393fe0a27d9fbf"
        },
        {
          "url": "https://git.kernel.org/stable/c/43d6508ddbf9fb974fbc359a033154f78c9d4c8b"
        }
      ],
      "title": "drm/bridge: cadence: cdns-mhdp8546-core: Set the mhdp connector earlier in atomic_enable()",
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        "engine": "bippy-1.2.0"
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    "cveId": "CVE-2026-53058",
    "datePublished": "2026-06-24T16:30:03.463Z",
    "dateReserved": "2026-06-09T07:44:35.381Z",
    "dateUpdated": "2026-06-24T16:30:03.463Z",
    "state": "PUBLISHED"
  },
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  "vulnerability-lookup:meta": {
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      "date": "2026-07-16",
      "epss": "0.00168",
      "percentile": "0.06357"
    },
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      "cve": "CVE-2026-53058",
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      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "drm/bridge: cadence: cdns-mhdp8546-core: Set the mhdp connector earlier in atomic_enable()",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-53058.json",
      "version": "2"
    },
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T07:44:14+00:00",
      "cve": "CVE-2026-53058",
      "id": "CVE-2026-53058",
      "initial_release_date": "2026-06-24T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/bridge: cadence: cdns-mhdp8546-core: Set the mhdp connector earlier in atomic_enable()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53058.json",
      "version": "3"
    }
  }
}



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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.
  • 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.