FKIE_CVE-2026-68241

Vulnerability from fkie_nvd - Published: 2026-08-10 13:20 - Updated: 2026-08-17 05:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/i915/mst: limit DP MST ESI service loop The loop in intel_dp_check_mst_status() keeps servicing interrupts originating from the sink without bound. Add an upper bound to the new interrupts occurring during interrupt processing to not get stuck on potentially stuck sink devices. Use arbitrary 32 tries to clear incoming interrupts in one go. Discovered using AI-assisted static analysis confirmed by Intel Product Security. Note: The condition likely pre-dates the commit in the Fixes: tag, but this is about as far back as a backport has any chance of succeeding. Before that, the retry had a goto. (cherry picked from commit b4ea5272133059acb493cc36599071a9e852ec2e)
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/005771c18c5b2c98cb4e7517661aea460990fd3f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9061fbf2230b6fcef042a6f637beae57c2fc93a5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e3bcd3bf7eeca9570b9fa0b2f8a602c7bcc6b0d0
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/i915/display/intel_dp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e3bcd3bf7eeca9570b9fa0b2f8a602c7bcc6b0d0",
              "status": "affected",
              "version": "3c0ec2c2d5948356a22c8f1c08a8087b12a303e7",
              "versionType": "git"
            },
            {
              "lessThan": "9061fbf2230b6fcef042a6f637beae57c2fc93a5",
              "status": "affected",
              "version": "3c0ec2c2d5948356a22c8f1c08a8087b12a303e7",
              "versionType": "git"
            },
            {
              "lessThan": "005771c18c5b2c98cb4e7517661aea460990fd3f",
              "status": "affected",
              "version": "3c0ec2c2d5948356a22c8f1c08a8087b12a303e7",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/i915/display/intel_dp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.8"
            },
            {
              "lessThan": "5.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/i915/mst: limit DP MST ESI service loop\n\nThe loop in intel_dp_check_mst_status() keeps servicing interrupts\noriginating from the sink without bound. Add an upper bound to the new\ninterrupts occurring during interrupt processing to not get stuck on\npotentially stuck sink devices. Use arbitrary 32 tries to clear incoming\ninterrupts in one go.\n\nDiscovered using AI-assisted static analysis confirmed by Intel Product\nSecurity.\n\nNote: The condition likely pre-dates the commit in the Fixes: tag, but\nthis is about as far back as a backport has any chance of\nsucceeding. Before that, the retry had a goto.\n\n(cherry picked from commit b4ea5272133059acb493cc36599071a9e852ec2e)"
    }
  ],
  "id": "CVE-2026-68241",
  "lastModified": "2026-08-17T05:18:26.407",
  "metrics": {},
  "published": "2026-08-10T13:20:12.503",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/005771c18c5b2c98cb4e7517661aea460990fd3f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9061fbf2230b6fcef042a6f637beae57c2fc93a5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e3bcd3bf7eeca9570b9fa0b2f8a602c7bcc6b0d0"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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