Date: Tue, 22 Dec 2020 18:06:13 +0100 From: Mauro Matteo Cascella <mcascell@...hat.com> To: oss-security@...ts.openwall.com Cc: 330cjfdn@...il.com Subject: CVE-2020-25723 QEMU: assertion failure through usb_packet_unmap() in hw/usb/hcd-ehci.c Hello, A flaw was found in the USB EHCI controller emulation of QEMU. It could occur while processing USB requests due to DMA memory map failure not being properly detected. This was fixed in the following commit by checking the return value of usb_packet_map(), thus preventing a reachable assertion issue from occuring in a later call of usb_packet_unmap(). Upstream commit: https://git.qemu.org/?p=qemu.git;a=commit;h=2fdb42d840400d58f2e706ecca82c142b97bcbd6 This issue was reported by Cheolwoo Myung (cc'd). CVE-2020-25723 was assigned by Red Hat Inc. Best regards. -- Mauro Matteo Cascella Red Hat Product Security PGP-Key ID: BB3410B0
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