CVE-2023-53181 (GCVE-0-2023-53181)
Vulnerability from cvelistv5
Published
2025-09-15 14:04
Modified
2025-09-15 14:04
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: dma-buf/dma-resv: Stop leaking on krealloc() failure Currently dma_resv_get_fences() will leak the previously allocated array if the fence iteration got restarted and the krealloc_array() fails. Free the old array by hand, and make sure we still clear the returned *fences so the caller won't end up accessing freed memory. Some (but not all) of the callers of dma_resv_get_fences() seem to still trawl through the array even when dma_resv_get_fences() failed. And let's zero out *num_fences as well for good measure.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/05abb3be91d8788328231ee02973ab3d47f5e3d2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/19e7b9f1f7e1cb92a4cc53b4c064f7fb4b1f1983
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/819656cc03dec7f7f7800274dfbc8eb49f888e9f
Impacted products
Vendor Product Version
Linux Linux Version: d3c80698c9f58a0683badf78793eebaa0c71afbd
Version: d3c80698c9f58a0683badf78793eebaa0c71afbd
Version: d3c80698c9f58a0683badf78793eebaa0c71afbd
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   Linux Linux Version: 5.16
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{
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          "programFiles": [
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      "descriptions": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndma-buf/dma-resv: Stop leaking on krealloc() failure\n\nCurrently dma_resv_get_fences() will leak the previously\nallocated array if the fence iteration got restarted and\nthe krealloc_array() fails.\n\nFree the old array by hand, and make sure we still clear\nthe returned *fences so the caller won\u0027t end up accessing\nfreed memory. Some (but not all) of the callers of\ndma_resv_get_fences() seem to still trawl through the\narray even when dma_resv_get_fences() failed. And let\u0027s\nzero out *num_fences as well for good measure."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-15T14:04:32.098Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53181",
    "datePublished": "2025-09-15T14:04:32.098Z",
    "dateReserved": "2025-09-15T13:59:19.065Z",
    "dateUpdated": "2025-09-15T14:04:32.098Z",
    "state": "PUBLISHED"
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  "vulnerability-lookup:meta": {
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  }
}


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