The hash_buffer function in schnorr.c in OpenSSH through 6.4, when Makefile.inc is modified to enable the J-PAKE protocol, does not initialize certain data structures, which might allow remote attackers to cause a denial of service (memory corruption) or have unspecified other impact via vectors that trigger an error condition.
We do not enable JPAKE support in our openSSH releases, so SUSE Linux Enterprise and openSUSE are not affected by this problem.
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