crypto: starfive - Do not free stack buffer

commit d7f0164 upstream. RSA text data uses variable length buffer allocated in software stack. Calling kfree on it causes undefined behaviour in subsequent operations. Cc: <[email protected]> #6.7+ Signed-off-by: Jia Jie Ho <[email protected]> Signed-off-by: Herbert Xu <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
libre-computer-project · Jun 16, 2024 · 5944de1 · 5944de1
1 parent 0c31344
commit 5944de1
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/drivers/crypto/starfive/jh7110-rsa.c b/drivers/crypto/starfive/jh7110-rsa.c
@@ -273,7 +273,6 @@ static int starfive_rsa_enc_core(struct starfive_cryp_ctx *ctx, int enc)
 
 err_rsa_crypt:
 	writel(STARFIVE_RSA_RESET, cryp->base + STARFIVE_PKA_CACR_OFFSET);
-	kfree(rctx->rsa_data);
 	return ret;
 }