net: fool proof dev_valid_name()
[ Upstream commit a9d48205d0aedda021fc3728972a9e9934c2b9de ] We want to use dev_valid_name() to validate tunnel names, so better use strnlen(name, IFNAMSIZ) than strlen(name) to make sure to not upset KASAN. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
6773caa6ac
commit
954d71e7c6
1 changed files with 1 additions and 1 deletions
|
@ -989,7 +989,7 @@ bool dev_valid_name(const char *name)
|
|||
{
|
||||
if (*name == '\0')
|
||||
return false;
|
||||
if (strlen(name) >= IFNAMSIZ)
|
||||
if (strnlen(name, IFNAMSIZ) == IFNAMSIZ)
|
||||
return false;
|
||||
if (!strcmp(name, ".") || !strcmp(name, ".."))
|
||||
return false;
|
||||
|
|
Loading…
Add table
Reference in a new issue