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| author | Eric Biggers <ebiggers@google.com> | 2018-07-27 15:36:10 -0700 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-08-03 18:06:06 +0800 |
| commit | 10bbc52977a8fd323c8c6f8eb73bff9fead1abfa (patch) | |
| tree | 96649f57c67330deb5284ee6e49338504c8488d7 /crypto/testmgr.h | |
| parent | 40f6ea894d5da061e92946d28fc9bc44bdfb597c (diff) | |
| download | linux-crypto-10bbc52977a8fd323c8c6f8eb73bff9fead1abfa.tar.gz linux-crypto-10bbc52977a8fd323c8c6f8eb73bff9fead1abfa.zip | |
crypto: dh - fix calculating encoded key size
It was forgotten to increase DH_KPP_SECRET_MIN_SIZE to include 'q_size',
causing an out-of-bounds write of 4 bytes in crypto_dh_encode_key(), and
an out-of-bounds read of 4 bytes in crypto_dh_decode_key(). Fix it, and
fix the lengths of the test vectors to match this.
Reported-by: syzbot+6d38d558c25b53b8f4ed@syzkaller.appspotmail.com
Fixes: 2fefd42016a3 ("crypto: dh - add public key verification test")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/testmgr.h')
| -rw-r--r-- | crypto/testmgr.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/crypto/testmgr.h b/crypto/testmgr.h index 759462d6..173111c7 100644 --- a/crypto/testmgr.h +++ b/crypto/testmgr.h @@ -641,14 +641,14 @@ static const struct kpp_testvec dh_tv_template[] = { .secret = #ifdef __LITTLE_ENDIAN "\x01\x00" /* type */ - "\x11\x02" /* len */ + "\x15\x02" /* len */ "\x00\x01\x00\x00" /* key_size */ "\x00\x01\x00\x00" /* p_size */ "\x00\x00\x00\x00" /* q_size */ "\x01\x00\x00\x00" /* g_size */ #else "\x00\x01" /* type */ - "\x02\x11" /* len */ + "\x02\x15" /* len */ "\x00\x00\x01\x00" /* key_size */ "\x00\x00\x01\x00" /* p_size */ "\x00\x00\x00\x00" /* q_size */ @@ -741,7 +741,7 @@ static const struct kpp_testvec dh_tv_template[] = { "\xd3\x34\x49\xad\x64\xa6\xb1\xc0\x59\x28\x75\x60\xa7\x8a\xb0\x11" "\x56\x89\x42\x74\x11\xf5\xf6\x5e\x6f\x16\x54\x6a\xb1\x76\x4d\x50" "\x8a\x68\xc1\x5b\x82\xb9\x0d\x00\x32\x50\xed\x88\x87\x48\x92\x17", - .secret_size = 529, + .secret_size = 533, .b_public_size = 256, .expected_a_public_size = 256, .expected_ss_size = 256, @@ -750,14 +750,14 @@ static const struct kpp_testvec dh_tv_template[] = { .secret = #ifdef __LITTLE_ENDIAN "\x01\x00" /* type */ - "\x11\x02" /* len */ + "\x15\x02" /* len */ "\x00\x01\x00\x00" /* key_size */ "\x00\x01\x00\x00" /* p_size */ "\x00\x00\x00\x00" /* q_size */ "\x01\x00\x00\x00" /* g_size */ #else "\x00\x01" /* type */ - "\x02\x11" /* len */ + "\x02\x15" /* len */ "\x00\x00\x01\x00" /* key_size */ "\x00\x00\x01\x00" /* p_size */ "\x00\x00\x00\x00" /* q_size */ @@ -850,7 +850,7 @@ static const struct kpp_testvec dh_tv_template[] = { "\x5e\x5a\x64\xbd\xf6\x85\x04\xe8\x28\x6a\xac\xef\xce\x19\x8e\x9a" "\xfe\x75\xc0\x27\x69\xe3\xb3\x7b\x21\xa7\xb1\x16\xa4\x85\x23\xee" "\xb0\x1b\x04\x6e\xbd\xab\x16\xde\xfd\x86\x6b\xa9\x95\xd7\x0b\xfd", - .secret_size = 529, + .secret_size = 533, .b_public_size = 256, .expected_a_public_size = 256, .expected_ss_size = 256, |