mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 21:38:32 +08:00
bpf: Use struct_size() in kzalloc()
Make use of the struct_size() helper instead of an open-coded version, in order to avoid any potential type mistakes or integer overflows that, in the worst scenario, could lead to heap overflows. This code was detected with the help of Coccinelle and, audited and fixed manually. Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
0f3ee28033
commit
fe0bdaec8d
@ -524,8 +524,7 @@ bpf_sk_storage_diag_alloc(const struct nlattr *nla_stgs)
|
||||
nr_maps++;
|
||||
}
|
||||
|
||||
diag = kzalloc(sizeof(*diag) + sizeof(diag->maps[0]) * nr_maps,
|
||||
GFP_KERNEL);
|
||||
diag = kzalloc(struct_size(diag, maps, nr_maps), GFP_KERNEL);
|
||||
if (!diag)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user