CVE-2026-68259 (GCVE-0-2026-68259)

Vulnerability from cvelistv5 – Published: 2026-08-10 12:01 – Updated: 2026-08-19 16:32
VLAI
Title
drm/amdkfd: Check bounds in allocate_event_notification_slot
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Check bounds in allocate_event_notification_slot The valid event ids go from 0 to KFD_SIGNAL_EVENT_LIMIT allocate_event_notification_slot has an option to specify an event id to allocate at, used by CRIU. We weren't checking the bounds on that value. Check them. v2: Lower bounds check is unecessary because of idr_alloc already rejecting negative numbers. Upper bounds check should be KFD_SIGNAL_EVENT_LIMIT since the signal mode mappings might not yet exist (cherry picked from commit 6853f1f6cbbeb3f53ebbbd7286536aeb2c5d5f50)
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 40e8a766a761f7fdc8530347527b344fddf6f1a8 , < 6884fc142b17f456caac50c14505f509bfbcd012 (git)
Affected: 40e8a766a761f7fdc8530347527b344fddf6f1a8 , < 85eedff5f0c4aba5a66bc37a1bd6bcecd0d77b53 (git)
Affected: 40e8a766a761f7fdc8530347527b344fddf6f1a8 , < 4622214f0542f64b02c250db0f9c677eeb032d9b (git)
Affected: 40e8a766a761f7fdc8530347527b344fddf6f1a8 , < 50319efb865f72db45f191c8709511746d58ee0a (git)
Affected: 40e8a766a761f7fdc8530347527b344fddf6f1a8 , < abeeb1947d81610c65349db4d89c6151f270e136 (git)
Affected: 40e8a766a761f7fdc8530347527b344fddf6f1a8 , < bb52249fbbe948875155ccd45cd8d74bf4ae747b (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 6.1.183 , ≤ 6.1.* (semver)
Unaffected: 6.6.148 , ≤ 6.6.* (semver)
Unaffected: 6.12.101 , ≤ 6.12.* (semver)
Unaffected: 6.18.42 , ≤ 6.18.* (semver)
Unaffected: 7.1.6 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdkfd/kfd_events.c"
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              "versionType": "semver"
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              "version": "6.6.148",
              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver"
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              "version": "7.1.6",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Check bounds in allocate_event_notification_slot\n\nThe valid event ids go from 0 to KFD_SIGNAL_EVENT_LIMIT\n\nallocate_event_notification_slot has an option to specify\nan event id to allocate at, used by CRIU. We weren\u0027t checking\nthe bounds on that value.\n\nCheck them.\n\nv2: Lower bounds check is unecessary because of idr_alloc\nalready rejecting negative numbers. Upper bounds check should\nbe KFD_SIGNAL_EVENT_LIMIT since the signal mode mappings might\nnot yet exist\n\n(cherry picked from commit 6853f1f6cbbeb3f53ebbbd7286536aeb2c5d5f50)"
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/6884fc142b17f456caac50c14505f509bfbcd012"
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        },
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          "url": "https://git.kernel.org/stable/c/4622214f0542f64b02c250db0f9c677eeb032d9b"
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        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/bb52249fbbe948875155ccd45cd8d74bf4ae747b"
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      "title": "drm/amdkfd: Check bounds in allocate_event_notification_slot",
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    "datePublished": "2026-08-10T12:01:33.110Z",
    "dateReserved": "2026-07-30T09:28:09.378Z",
    "dateUpdated": "2026-08-19T16:32:28.586Z",
    "state": "PUBLISHED"
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          }
        ],
        "id": "CVE-2026-68259",
        "lastModified": "2026-08-19T17:20:39.990",
        "metrics": {},
        "published": "2026-08-10T13:20:14.597",
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "current_release_date": "2026-08-11T15:32:17+00:00",
      "cve": "CVE-2026-68259",
      "id": "CVE-2026-68259",
      "initial_release_date": "2026-08-10T00:00:00+00:00",
      "product_status:known_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/amdkfd: Check bounds in allocate_event_notification_slot",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68259.json",
      "version": "3"
    },
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      "current_release_date": "2026-09-18T00:33:07Z",
      "cve": "CVE-2026-68259",
      "id": "CVE-2026-68259",
      "initial_release_date": "2026-08-21T00:44:07Z",
      "product_status:known_affected": "635",
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      "product_status:recommended": "107",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-68259",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-68259.json",
      "version": "8"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.