5.15-stable review patch. If anyone has any objections, please let me know.
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From: Konstantin Meskhidze konstantin.meskhidze@huawei.com
[ Upstream commit a3b7039bb2b22fcd2ad20d59c00ed4e606ce3754 ]
Buffer 'new_argv' is accessed without bound check after accessing with bound check via 'new_argc' index.
Fixes: e298f3b49def ("kconfig: add built-in function support") Co-developed-by: Ivanov Mikhail ivanov.mikhail1@huawei-partners.com Signed-off-by: Konstantin Meskhidze konstantin.meskhidze@huawei.com Signed-off-by: Masahiro Yamada masahiroy@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- scripts/kconfig/preprocess.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/scripts/kconfig/preprocess.c b/scripts/kconfig/preprocess.c index 748da578b418c..d1f5bcff4b62d 100644 --- a/scripts/kconfig/preprocess.c +++ b/scripts/kconfig/preprocess.c @@ -396,6 +396,9 @@ static char *eval_clause(const char *str, size_t len, int argc, char *argv[])
p++; } + + if (new_argc >= FUNCTION_MAX_ARGS) + pperror("too many function arguments"); new_argv[new_argc++] = prev;
/*