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CVE PROGRAM SOURCE RECORDUnscored

CVE-2023-53181

dma-buf/dma-resv: Stop leaking on krealloc() failure

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • d3c80698c9f58a0683badf78793eebaa0c71afbd to < 19e7b9f1f7e1cb92a4cc53b4c064f7fb4b1f1983affected
  • d3c80698c9f58a0683badf78793eebaa0c71afbd to < 819656cc03dec7f7f7800274dfbc8eb49f888e9faffected
  • d3c80698c9f58a0683badf78793eebaa0c71afbd to < 05abb3be91d8788328231ee02973ab3d47f5e3d2affected

Linux Linux

Default version status: affected

  • 5.16affected
  • 0 to < 5.16unaffected
  • 6.1.42 to ≤ 6.1.*unaffected
  • 6.4.7 to ≤ 6.4.*unaffected
  • 6.5 to ≤ *unaffected

References