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| author | Herbert Xu | 2016-04-03 06:37:15 +0200 |
|---|---|---|
| committer | Herbert Xu | 2016-04-04 15:45:51 +0200 |
| commit | ef609c238a8ea163cb0af759cc73c9e2555c89da (patch) | |
| tree | 99fc4f1518315e72c089626567a07dfd964c78ef /net/sunrpc/auth_gss/gss_krb5_mech.c | |
| parent | Linux 4.6-rc2 (diff) | |
| download | kernel-qcow2-linux-ef609c238a8ea163cb0af759cc73c9e2555c89da.tar.gz kernel-qcow2-linux-ef609c238a8ea163cb0af759cc73c9e2555c89da.tar.xz kernel-qcow2-linux-ef609c238a8ea163cb0af759cc73c9e2555c89da.zip | |
sunrpc: Fix skcipher/shash conversion
The skcpiher/shash conversion introduced a number of bugs in the
sunrpc code:
1) Missing calls to skcipher_request_set_tfm lead to crashes.
2) The allocation size of shash_desc is too small which leads to
memory corruption.
Fixes: 3b5cf20cf439 ("sunrpc: Use skcipher and ahash/shash")
Reported-by: J. Bruce Fields <bfields@fieldses.org>
Tested-by: J. Bruce Fields <bfields@fieldses.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'net/sunrpc/auth_gss/gss_krb5_mech.c')
| -rw-r--r-- | net/sunrpc/auth_gss/gss_krb5_mech.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/sunrpc/auth_gss/gss_krb5_mech.c b/net/sunrpc/auth_gss/gss_krb5_mech.c index 71341ccb9890..65427492b1c9 100644 --- a/net/sunrpc/auth_gss/gss_krb5_mech.c +++ b/net/sunrpc/auth_gss/gss_krb5_mech.c @@ -451,7 +451,8 @@ context_derive_keys_rc4(struct krb5_ctx *ctx) goto out_err_free_hmac; - desc = kmalloc(sizeof(*desc), GFP_KERNEL); + desc = kmalloc(sizeof(*desc) + crypto_shash_descsize(hmac), + GFP_KERNEL); if (!desc) { dprintk("%s: failed to allocate hash descriptor for '%s'\n", __func__, ctx->gk5e->cksum_name); |