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authorPrasad J Pandit <pjp@fedoraproject.org>2021-01-18 17:21:30 +0530
committerPaolo Bonzini <pbonzini@redhat.com>2021-01-23 09:26:40 -0500
commitb8d7f1bc59276fec85e4d09f1567613a3e14d31e (patch)
treef1ab21d5110b354e6f6d50fc13025829d7bab30a /hw/misc/mst_fpga.c
parentbbf901914170c6ee423beb3b8c510038c16d082f (diff)
downloadfocaccia-qemu-b8d7f1bc59276fec85e4d09f1567613a3e14d31e.tar.gz
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ide: atapi: check logical block address and read size (CVE-2020-29443)
While processing ATAPI cmd_read/cmd_read_cd commands,
Logical Block Address (LBA) maybe invalid OR closer to the last block,
leading to an OOB access issues. Add range check to avoid it.

Fixes: CVE-2020-29443
Reported-by: Wenxiang Qian <leonwxqian@gmail.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Message-Id: <20210118115130.457044-1-ppandit@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/misc/mst_fpga.c')
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