Messages in this thread Patch in this message | | | From | Yu Zhe <> | Subject | [PATCH] cxl/pmem: Use size_add() against integer overflow | Date | Tue, 27 Sep 2022 15:02:47 +0800 |
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"struct_size() + n" may cause a integer overflow, use size_add() to handle it.
Signed-off-by: Yu Zhe <yuzhe@nfschina.com> --- drivers/cxl/pmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/cxl/pmem.c b/drivers/cxl/pmem.c index 7dc0a2fa1a6b..8c08aa009a56 100644 --- a/drivers/cxl/pmem.c +++ b/drivers/cxl/pmem.c @@ -148,7 +148,7 @@ static int cxl_pmem_set_config_data(struct cxl_dev_state *cxlds, return -EINVAL; /* 4-byte status follows the input data in the payload */ - if (struct_size(cmd, in_buf, cmd->in_length) + 4 > buf_len) + if (size_add(struct_size(cmd, in_buf, cmd->in_length), 4) > buf_len) return -EINVAL; set_lsa = -- 2.11.0
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