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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 | 2f40a178e70030c4712fe63807c883f34c3645eb (patch) | |
| tree | 8b84e1c7a18df7c134d32cbe587cd6d88c9e942e /crypto/chainiv.c | |
| parent | 6212f2c7f70c591efb0d9f3d50ad29112392fee2 (diff) | |
[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/chainiv.c')
0 files changed, 0 insertions, 0 deletions