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home:dirkmueller:acdc:as_python3_module
gmp.21885
gmp-6.2.1-CVE-2021-43618.patch
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File gmp-6.2.1-CVE-2021-43618.patch of Package gmp.21885
# HG changeset patch # User Marco Bodrato <bodrato@mail.dm.unipi.it> # Date 1634836009 -7200 # Node ID 561a9c25298e17bb01896801ff353546c6923dbd # Parent e1fd9db13b475209a864577237ea4b9105b3e96e mpz/inp_raw.c: Avoid bit size overflows diff -r e1fd9db13b47 -r 561a9c25298e mpz/inp_raw.c --- a/mpz/inp_raw.c Tue Dec 22 23:49:51 2020 +0100 +++ b/mpz/inp_raw.c Thu Oct 21 19:06:49 2021 +0200 @@ -88,8 +88,11 @@ abs_csize = ABS (csize); + if (UNLIKELY (abs_csize > ~(mp_bitcnt_t) 0 / 8)) + return 0; /* Bit size overflows */ + /* round up to a multiple of limbs */ - abs_xsize = BITS_TO_LIMBS (abs_csize*8); + abs_xsize = BITS_TO_LIMBS ((mp_bitcnt_t) abs_csize * 8); if (abs_xsize != 0) {
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