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drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set()

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set() The kfd_event_page_set() function writes KFD_SIGNAL_EVENT_LIMIT * 8 bytes via memset without checking the buffer size parameter. This allows unprivileged userspace to trigger an out-of bounds kernel memory write by passing a small buffer, leading to potential privilege escalation.

Announced Source revision 1
Original source ↗

CVE-2026-43206

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: cve:CVE-2026-43206

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "0fc8011f89feb8b2c3008583b777d097e1974660",
        "lessThan": "3e04bc310d80b46eaf481f1fefcbcb37a187412d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0fc8011f89feb8b2c3008583b777d097e1974660",
        "lessThan": "de8d7a25cd2eb5875b1d8d4fbc7fe4b4138b781f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0fc8011f89feb8b2c3008583b777d097e1974660",
        "lessThan": "b4034442cb090e4a980bdcc1540948606cbc951b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0fc8011f89feb8b2c3008583b777d097e1974660",
        "lessThan": "4857c37c7ba9aa38b9a4c694e8bd8d0091c87940",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0fc8011f89feb8b2c3008583b777d097e1974660",
        "lessThan": "75fb57efdd7863fffbc39db23e9cad7aafda26ed",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0fc8011f89feb8b2c3008583b777d097e1974660",
        "lessThan": "bfcd6b53e1f4feb182952f4ff9a137c36ceaf20b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0fc8011f89feb8b2c3008583b777d097e1974660",
        "lessThan": "4e72f419e4ed44cb3b60506752d8688c20a60a9b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0fc8011f89feb8b2c3008583b777d097e1974660",
        "lessThan": "8a70a26c9f34baea6c3199a9862ddaff4554a96d",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/gpu/drm/amd/amdkfd/kfd_events.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.17"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.17",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.252",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.202",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.165",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.128",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.75",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.16",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "6.19.6",
        "versionType": "semver",
        "lessThanOrEqual": "6.19.*"
      },
      {
        "status": "unaffected",
        "version": "7.0",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/gpu/drm/amd/amdkfd/kfd_events.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-43206

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#40044 · Revision 1
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Publisher date
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