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CVE-2026-89996 dma-buf: dma-heap: don't publish fd before copy_to_user() succeeds

🗓️ 16 Sep 2026 10:33:08Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 50 Views

Linux kernel dma-buf dma-heap leaks fd and dma-buf reference if copy_to_user fails after fd_install.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/dma-buf/dma-buf.c",
      "drivers/dma-buf/dma-heap.c",
      "include/linux/dma-buf.h"
    ],
    "versions": [
      {
        "version": "c02a81fba74fe3488ad6b08bfb5a1329005418f8",
        "lessThan": "ad61defb3e66ac0c598ad6f39b57f15784543d46",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c02a81fba74fe3488ad6b08bfb5a1329005418f8",
        "lessThan": "1bf6083a41f810d760c4dcd1b80c5194a92575aa",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c02a81fba74fe3488ad6b08bfb5a1329005418f8",
        "lessThan": "69d57dbadb27ffd5eef34fd184bab145500cdabc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c02a81fba74fe3488ad6b08bfb5a1329005418f8",
        "lessThan": "0d4a5d218055db29b50cc07d3d73d27007c2a391",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c02a81fba74fe3488ad6b08bfb5a1329005418f8",
        "lessThan": "30d0aff2c65a277135cfd8ea28fa1ee75e0ea4e0",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/dma-buf/dma-buf.c",
      "drivers/dma-buf/dma-heap.c",
      "include/linux/dma-buf.h"
    ],
    "versions": [
      {
        "version": "5.6",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.6",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.160",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.112",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.52",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.5",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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21 Oct 2026 12:49Current
EPSS0.00206
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