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drm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference

Type: advisorySource: OSV1 source record

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference prev_sink is unconditionally retained via dc_sink_retain at function entry, but the DP alt mode timeout path inside SIGNAL_TYPE_DISPLAY_PORT returns false without releasing prev_sink. All other return paths in the function correctly call dc_sink_release(prev_sink), making this the only missing cleanup. (cherry picked from commit 45510cf662dcf46b5d8926d454f338809f107b9d)

Announced Source revision 1
Original source ↗

CVE-2026-68256

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:CVE-2026-68256

Kernel

Source reference: /affected/1/package/name

Affected versions
Not stated in this record
Fixed versions
6.6.148

Source reference: /affected/1/ranges

6.12.101

Source reference: /affected/1/ranges

6.18.42

Source reference: /affected/1/ranges

7.1.6

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
        "type": "GIT",
        "events": [
          {
            "introduced": "54618888d1ea7a26f8bccfb89e3c2420350c8047"
          },
          {
            "fixed": "f9922828a4ebd26286fbe0286cc61695e7d9b07b"
          },
          {
            "fixed": "a59e493567d18ef3858be9368acd132a01ebfa09"
          },
          {
            "fixed": "4ee77643e6194f2deb62fe62f04396f9825e27d8"
          },
          {
            "fixed": "58ea24dd96848626039296e9e8510270ec8dc4bf"
          },
          {
            "fixed": "a6e14b976be48eebd8769cb5b883a6af7fc5ade1"
          }
        ]
      }
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68256.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.3.0"
          },
          {
            "fixed": "6.6.148"
          }
        ]
      },
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.7.0"
          },
          {
            "fixed": "6.12.101"
          }
        ]
      },
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.13.0"
          },
          {
            "fixed": "6.18.42"
          }
        ]
      },
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.19.0"
          },
          {
            "fixed": "7.1.6"
          }
        ]
      }
    ],
    "package": {
      "name": "Kernel",
      "ecosystem": "Linux"
    },
    "database_specific": {
      "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68256.json"
    }
  }
]
Related CVEs
CVE-2026-68256

Source reference: /id

Publisher severity

No explicit severity was provided.

Event
#50661 · Revision 1
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Publisher date
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