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Myron Stowe
127f141edd
JIRA: https://issues.redhat.com/browse/RHEL-132906
CVE: CVE-2023-53034
Upstream Status: de203da734fae00e75be50220ba5391e7beecdf9
commit de203da734fae00e75be50220ba5391e7beecdf9
Author: Yajun Deng <yajun.deng@linux.dev>
Date: Wed Aug 16 16:33:05 2023 +0800
ntb_hw_switchtec: Fix shift-out-of-bounds in switchtec_ntb_mw_set_trans
There is a kernel API ntb_mw_clear_trans() would pass 0 to both addr and
size. This would make xlate_pos negative.
[ 23.734156] switchtec switchtec0: MW 0: part 0 addr 0x0000000000000000 size 0x0000000000000000
[ 23.734158] ================================================================================
[ 23.734172] UBSAN: shift-out-of-bounds in drivers/ntb/hw/mscc/ntb_hw_switchtec.c:293:7
[ 23.734418] shift exponent -1 is negative
Ensuring xlate_pos is a positive or zero before BIT.
Fixes: 1e2fd202f8 ("ntb_hw_switchtec: Check for alignment of the buffer in mw_set_trans()")
Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Myron Stowe <mstowe@redhat.com>