[Bug 1880822] Re: CVE-2020-13253 QEMU: sd: OOB access could crash the guest resulting in DoS

[Philippe Mathieu-Daudé]

Patch reducing the exposure to this bug:
https://lists.gnu.org/archive/html/qemu-devel/2020-06/msg00823.html

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https://bugs.launchpad.net/bugs/1880822

Title:
  CVE-2020-13253 QEMU: sd: OOB access could crash the guest resulting in
  DoS

Status in QEMU:
  Confirmed

Bug description:
  An out-of-bounds read access issue was found in the SD Memory Card
  emulator of the QEMU. It occurs while performing block write commands
  via sdhci_write(), if a guest user has sent 'address' which is OOB of
  's->wp_groups'. A guest user/process may use this flaw to crash the
  QEMU process resulting in DoS.

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