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| author | Joy Latten <latten@austin.ibm.com> | 2008-03-06 19:28:44 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2008-03-06 19:28:44 +0800 |
| commit | 12da6951c110e8fd80cb25dfdeb96f57513bcaf2 (patch) | |
| tree | 85e21a089f7da613de8fb1ece77767fb7952986b /crypto/eseqiv.c | |
| parent | cba4255808b2a8a6e27e595ca5717df09a9927c9 (diff) | |
| download | linux-crypto-12da6951c110e8fd80cb25dfdeb96f57513bcaf2.tar.gz linux-crypto-12da6951c110e8fd80cb25dfdeb96f57513bcaf2.zip | |
[CRYPTO] xcbc: Fix crash with IPsec
When using aes-xcbc-mac for authentication in IPsec,
the kernel crashes. It seems this algorithm doesn't
account for the space IPsec may make in scatterlist for authtag.
Thus when crypto_xcbc_digest_update2() gets called,
nbytes may be less than sg[i].length.
Since nbytes is an unsigned number, it wraps
at the end of the loop allowing us to go back
into loop and causing crash in memcpy.
I used update function in digest.c to model this fix.
Please let me know if it looks ok.
Signed-off-by: Joy Latten <latten@austin.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/eseqiv.c')
0 files changed, 0 insertions, 0 deletions