Vulnerability-Lookup

GHSA-RC9R-G4HP-H8V7

Vulnerability from github – Published: 2026-06-24 18:32 – Updated: 2026-06-24 18:32

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53058"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-24T17:17:18Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-rc9r-g4hp-h8v7",
  "modified": "2026-06-24T18:32:45Z",
  "published": "2026-06-24T18:32:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53058"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1af3b42e08a957e53bab8e1897393fe0a27d9fbf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/43d6508ddbf9fb974fbc359a033154f78c9d4c8b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5302015daf26ef6b48e067f2b86c9482ac19e015"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a3611554e599d1a24b45fd8415bacb72ce861e4b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cf2ac2cac8b319f89b3a3851ca0c5ffb6a549575"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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

Vulnerability from cvelistv5 – Published: 2026-06-24 16:30 – Updated: 2026-06-24 16:30

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

Linux

References

5 references

URL	Tags
https://git.kernel.org/stable/c/5302015daf26ef6b4…
https://git.kernel.org/stable/c/a3611554e599d1a24…
https://git.kernel.org/stable/c/cf2ac2cac8b319f89…
https://git.kernel.org/stable/c/1af3b42e08a957e53…
https://git.kernel.org/stable/c/43d6508ddbf9fb974…

Impacted products

2 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)
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": {
    "cna": {
      "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",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5302015daf26ef6b48e067f2b86c9482ac19e015",
              "status": "affected",
              "version": "c932ced6b58524eeb948ff252f6512cd6bcb9d9f",
              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "1af3b42e08a957e53bab8e1897393fe0a27d9fbf",
              "status": "affected",
              "version": "c932ced6b58524eeb948ff252f6512cd6bcb9d9f",
              "versionType": "git"
            },
            {
              "lessThan": "43d6508ddbf9fb974fbc359a033154f78c9d4c8b",
              "status": "affected",
              "version": "c932ced6b58524eeb948ff252f6512cd6bcb9d9f",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "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",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.6"
            },
            {
              "lessThan": "6.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.141",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.91",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.141",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.91",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.33",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.10",
                  "versionStartIncluding": "6.6",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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"
        },
        {
          "url": "https://git.kernel.org/stable/c/a3611554e599d1a24b45fd8415bacb72ce861e4b"
        },
        {
          "url": "https://git.kernel.org/stable/c/cf2ac2cac8b319f89b3a3851ca0c5ffb6a549575"
        },
        {
          "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()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "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"
  },
  "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.

Action not permitted

GHSA-RC9R-G4HP-H8V7

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

Tags

Sightings

Nomenclature