CVE-2026-98910 (GCVE-0-2026-98910)

Vulnerability from cvelistv5 – Published: 2026-10-23 11:54 – Updated: 2026-10-26 06:56
VLAI
Title
drm/amdkfd: Unwind debug trap enable on copy_to_user failure
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Unwind debug trap enable on copy_to_user failure If kfd_dbg_trap_enable() fails while copying runtime_info to userspace, it had already activated the trap, set debug_trap_enabled, taken an extra process reference, and opened the debug event file. Return -EFAULT without unwinding that state, leaving inconsistent trap state and a refcount imbalance that could break later DISABLE/ENABLE. On copy_to_user failure, deactivate the trap and undo the rest of the enable setup before returning.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7067 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0ab2d7532b05a3e7c06fd3b0c8bd6b46c1dfb508 , < 641be20110cdfb6d921605adb42a764a0fccac54 (git)
Affected: 0ab2d7532b05a3e7c06fd3b0c8bd6b46c1dfb508 , < 656a40bdc20def58790b8512e6000195436d8855 (git)
Affected: 0ab2d7532b05a3e7c06fd3b0c8bd6b46c1dfb508 , < 1b39f46eec2f907417d4955bb88434170f94a8d8 (git)
Affected: 0ab2d7532b05a3e7c06fd3b0c8bd6b46c1dfb508 , < 01112e241e37f9ac98b6f418d93ce2e0b87b7ee0 (git)
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Linux Linux Affected: 6.5
Unaffected: 0 , < 6.5 (semver)
Unaffected: 6.6.158 , ≤ 6.6.* (semver)
Unaffected: 6.12.111 , ≤ 6.12.* (semver)
Unaffected: 6.18.53 , ≤ 6.18.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdkfd/kfd_debug.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
            },
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          ],
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          "vendor": "Linux",
          "versions": [
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              "version": "6.5"
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              "versionType": "semver"
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              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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                  "vulnerable": true
                },
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Unwind debug trap enable on copy_to_user failure\n\nIf kfd_dbg_trap_enable() fails while copying runtime_info to userspace,\nit had already activated the trap, set debug_trap_enabled, taken an extra\nprocess reference, and opened the debug event file. Return -EFAULT without\nunwinding that state, leaving inconsistent trap state and a refcount\nimbalance that could break later DISABLE/ENABLE.\n\nOn copy_to_user failure, deactivate the trap and undo the rest of the\nenable setup before returning."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-26T06:56:40.297Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/641be20110cdfb6d921605adb42a764a0fccac54"
        },
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          "url": "https://git.kernel.org/stable/c/656a40bdc20def58790b8512e6000195436d8855"
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        {
          "url": "https://git.kernel.org/stable/c/01112e241e37f9ac98b6f418d93ce2e0b87b7ee0"
        }
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      "title": "drm/amdkfd: Unwind debug trap enable on copy_to_user failure",
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98910",
    "datePublished": "2026-10-23T11:54:50.520Z",
    "dateReserved": "2026-09-25T10:25:14.379Z",
    "dateUpdated": "2026-10-26T06:56:40.297Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-98910",
      "date": "2026-10-26",
      "epss": "0.00174",
      "percentile": "0.06838"
    },
    "microsoft_vex": {
      "current_release_date": "2026-10-24T14:47:03.000Z",
      "cve": "CVE-2026-98910",
      "id": "msrc_CVE-2026-98910",
      "initial_release_date": "2026-10-24T01:05:35.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "drm/amdkfd: Unwind debug trap enable on copy_to_user failure",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-98910.json",
      "version": "3"
    },
    "nvd": {
      "cve": {
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            "affectedData": [
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                "programFiles": [
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                    "versionType": "semver"
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Unwind debug trap enable on copy_to_user failure\n\nIf kfd_dbg_trap_enable() fails while copying runtime_info to userspace,\nit had already activated the trap, set debug_trap_enabled, taken an extra\nprocess reference, and opened the debug event file. Return -EFAULT without\nunwinding that state, leaving inconsistent trap state and a refcount\nimbalance that could break later DISABLE/ENABLE.\n\nOn copy_to_user failure, deactivate the trap and undo the rest of the\nenable setup before returning."
          }
        ],
        "id": "CVE-2026-98910",
        "lastModified": "2026-10-26T07:17:16.370",
        "metrics": {},
        "published": "2026-10-23T12:18:25.130",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    }
  }
}



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