[PATCH 08/22] crypto: x86/glue_helper - add check for xts input length equal to zero
From: Andrei Botila <andrei.botila@oss.nxp.com>
Date: 2020-08-07 16:22:42
Also in:
linux-arm-kernel, linux-crypto, linux-s390, lkml
Subsystem:
the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
From: Andrei Botila <redacted> Standardize the way input lengths equal to 0 are handled in all skcipher algorithms. All the algorithms return 0 for input lengths equal to zero. Cc: Thomas Gleixner <redacted> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrei Botila <redacted> --- arch/x86/crypto/glue_helper.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/x86/crypto/glue_helper.c b/arch/x86/crypto/glue_helper.c
index d3d91a0abf88..cc5042c72910 100644
--- a/arch/x86/crypto/glue_helper.c
+++ b/arch/x86/crypto/glue_helper.c@@ -275,6 +275,9 @@ int glue_xts_req_128bit(const struct common_glue_ctx *gctx, unsigned int nbytes, tail; int err; + if (!req->cryptlen) + return 0; + if (req->cryptlen < XTS_BLOCK_SIZE) return -EINVAL;
--
2.17.1