ShuriZma
/
xemu
mirror of https://github.com/xemu-project/xemu.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

hw/cxl: Fix uint32 overflow cxl-mailbox-utils.c 

The sum offset + length may overflow uint32. Since this sum is
compared with uint64_t return value of get_lsa_size(), it makes
sense to choose uint64_t type for offset and length.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 3ebe676a34 ("hw/cxl/device: Implement get/set Label Storage Area (LSA)")
Signed-off-by: Dmitry Frolov <frolov@swemel.ru>
Link: https://lore.kernel.org/r/20240917080925.270597-2-frolov@swemel.ru
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20241014121902.2146424-2-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Dmitry Frolov 2024-10-14 13:18:56 +01:00 committed by Michael S. Tsirkin
parent 963b027645
commit df66b85f35
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
hw/cxl/cxl-mailbox-utils.c
View File

@ -1445,7 +1445,7 @@ static CXLRetCode cmd_ccls_get_lsa(const struct cxl_cmd *cmd,
} QEMU_PACKED *get_lsa;
CXLType3Dev *ct3d = CXL_TYPE3(cci->d);
CXLType3Class *cvc = CXL_TYPE3_GET_CLASS(ct3d);
uint32_t offset, length;
uint64_t offset, length;
get_lsa = (void *)payload_in;
offset = get_lsa->offset;