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| author | Thorsten Blum <blum@kernel.org> | 2026-09-08 09:53:40 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2026-09-18 19:52:43 +1000 |
| commit | 016f22d2268e02df705868110fe4e402b51bfffc (patch) | |
| tree | 111ca5461e5f61d61f9424cdaefba2b2e1da0e24 | |
| parent | 9695df3b1db4ac4534274d38ee16e3b9b0bf910e (diff) | |
| download | linux-next-016f22d2268e02df705868110fe4e402b51bfffc.tar.gz linux-next-016f22d2268e02df705868110fe4e402b51bfffc.zip | |
crypto: zynqmp-sha - fix NULL pointer dereference in init_tfm
zynqmp_sha_init_tfm() checks crypto_shash_statesize(tfm_ctx->fbk_tfm)
before assigning the fallback transform to it, which dereferences a NULL
pointer since the transform context is zero-initialized. Use the local
fallback_tfm pointer for the size check instead.
Fixes: c1dd353d18e5 ("crypto: zynqmp-sha - Make descsize an algorithm attribute")
Cc: stable@vger.kernel.org
Signed-off-by: Thorsten Blum <blum@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | drivers/crypto/xilinx/zynqmp-sha.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/crypto/xilinx/zynqmp-sha.c b/drivers/crypto/xilinx/zynqmp-sha.c index 5813017b6b79..cd051e1f4275 100644 --- a/drivers/crypto/xilinx/zynqmp-sha.c +++ b/drivers/crypto/xilinx/zynqmp-sha.c @@ -59,7 +59,7 @@ static int zynqmp_sha_init_tfm(struct crypto_shash *hash) return PTR_ERR(fallback_tfm); if (crypto_shash_descsize(hash) < - crypto_shash_statesize(tfm_ctx->fbk_tfm)) { + crypto_shash_statesize(fallback_tfm)) { crypto_free_shash(fallback_tfm); return -EINVAL; } |