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GHSA-P54Q-XHJQ-3XH7

Vulnerability from github – Published: 2026-09-24 18:31 – Updated: 2026-09-24 18:31

Details

In the Linux kernel, the following vulnerability has been resolved:

drm/amdkfd: fix SMI event cross-process information leak

kfd_smi_ev_enabled() skips the suser privilege check when pid=0. PROCESS_START, PROCESS_END, and VMFAULT events are emitted with pid=0 while carrying another process's PID and command name, so any /dev/kfd user in the render group can monitor all GPU workloads.

Pass the target process PID into kfd_smi_event_add() for these events so the existing per-client filter restricts delivery to the owning process or CAP_SYS_ADMIN subscribers.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-97422"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-24T17:17:20Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: fix SMI event cross-process information leak\n\nkfd_smi_ev_enabled() skips the suser privilege check when pid=0.\nPROCESS_START, PROCESS_END, and VMFAULT events are emitted with\npid=0 while carrying another process\u0027s PID and command name, so any\n/dev/kfd user in the render group can monitor all GPU workloads.\n\nPass the target process PID into kfd_smi_event_add() for these events\nso the existing per-client filter restricts delivery to the owning\nprocess or CAP_SYS_ADMIN subscribers.",
  "id": "GHSA-p54q-xhjq-3xh7",
  "modified": "2026-09-24T18:31:32Z",
  "published": "2026-09-24T18:31:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97422"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5bb2dfa65d8da83e87b2a31c270bc567df69a5ca"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/92a8dba246d371fe268280e5fd74b0955688e6df"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-97422 (GCVE-0-2026-97422)

Vulnerability from cvelistv5 – Published: 2026-09-24 16:03 – Updated: 2026-09-25 12:43

Title

drm/amdkfd: fix SMI event cross-process information leak

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix SMI event cross-process information leak kfd_smi_ev_enabled() skips the suser privilege check when pid=0. PROCESS_START, PROCESS_END, and VMFAULT events are emitted with pid=0 while carrying another process's PID and command name, so any /dev/kfd user in the render group can monitor all GPU workloads. Pass the target process PID into kfd_smi_event_add() for these events so the existing per-client filter restricts delivery to the owning process or CAP_SYS_ADMIN subscribers.

Severity

No CVSS data available.

Assigner

Linux mitre root Scorecard

References

2 references

URL	Tags
https://git.kernel.org/stable/c/5bb2dfa65d8da83e8…
https://git.kernel.org/stable/c/92a8dba246d371fe2…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 938a0650aae6275ba8e924685836bdee2c6aa3db , < 5bb2dfa65d8da83e87b2a31c270bc567df69a5ca (git) Affected: 938a0650aae6275ba8e924685836bdee2c6aa3db , < 92a8dba246d371fe268280e5fd74b0955688e6df (git)
Linux	Linux	Affected: 5.9 Unaffected: 0 , < 5.9 (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_smi_events.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5bb2dfa65d8da83e87b2a31c270bc567df69a5ca",
              "status": "affected",
              "version": "938a0650aae6275ba8e924685836bdee2c6aa3db",
              "versionType": "git"
            },
            {
              "lessThan": "92a8dba246d371fe268280e5fd74b0955688e6df",
              "status": "affected",
              "version": "938a0650aae6275ba8e924685836bdee2c6aa3db",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdkfd/kfd_smi_events.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.9"
            },
            {
              "lessThan": "5.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.53",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: fix SMI event cross-process information leak\n\nkfd_smi_ev_enabled() skips the suser privilege check when pid=0.\nPROCESS_START, PROCESS_END, and VMFAULT events are emitted with\npid=0 while carrying another process\u0027s PID and command name, so any\n/dev/kfd user in the render group can monitor all GPU workloads.\n\nPass the target process PID into kfd_smi_event_add() for these events\nso the existing per-client filter restricts delivery to the owning\nprocess or CAP_SYS_ADMIN subscribers."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T12:43:57.907Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5bb2dfa65d8da83e87b2a31c270bc567df69a5ca"
        },
        {
          "url": "https://git.kernel.org/stable/c/92a8dba246d371fe268280e5fd74b0955688e6df"
        }
      ],
      "title": "drm/amdkfd: fix SMI event cross-process information leak",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97422",
    "datePublished": "2026-09-24T16:03:32.463Z",
    "dateReserved": "2026-09-24T14:53:16.868Z",
    "dateUpdated": "2026-09-25T12:43:57.907Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-P54Q-XHJQ-3XH7

CVE-2026-97422 (GCVE-0-2026-97422)

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