[krbdev.mit.edu #6629] SVN Commit

[Tom Yu via RT]

pull up r23608 from trunk

 ------------------------------------------------------------------------
 r23608 | epeisach | 2010-01-07 20:51:19 -0500 (Thu, 07 Jan 2010) | 23 lines

 subject: krb5int_derive_key results in cache with uninitialized values

 krb5int_derive_key creates a temporary keyblock to add to the derived cache.
 krb5_k_free_key will iterate over the derived keys and for ones with cache will
 lookup the enctype for the key_cleanup handler.

 Unfortunatly, there isn't a keyblock init function that does not allocate the
 keyblock - as I suspect this problem will appear in other places.

 The valgrind log of this problem is:

 ==7281== Conditional jump or move depends on uninitialised value(s)
 ==7281==    at 0x40E9AE8: find_enctype (etypes.h:81)
 ==7281==    by 0x40E9C96: krb5_k_free_key (key.c:91)
 ==7281==    by 0x40E9C52: krb5_k_free_key (key.c:86)
 ==7281==    by 0x40EBB00: krb5_c_prf (prf.c:87)
 ==7281==    by 0x40E7B1B: prf_plus (cf2.c:77)
 ==7281==    by 0x40E7CE6: krb5_c_fx_cf2_simple (cf2.c:125)
 ==7281==    by 0x804899C: main (t_cf2.c:70)
 ==7281==

 with memory leaks.

http://src.mit.edu/fisheye/changelog/krb5/?cs=23626
Commit By: tlyu
Revision: 23626
Changed Files:
U   branches/krb5-1-8/src/lib/crypto/krb/dk/derive.c