[3.6] bpo-28055: Fix unaligned accesses in siphash24(). (GH-6123) #6778
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The hash implementation casts the input pointer to uint64_t* and directly reads from this, which may cause unaligned accesses. Use memcpy() instead so this code will not crash with SIGBUS on sparc. https://bugs.gentoo.org/show_bug.cgi?id=636400 (cherry picked from commit 1e2ec8a) Co-authored-by: Rolf Eike Beer <eike@sf-mail.de>
serhiy-storchaka
approved these changes
May 13, 2018
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@DerDakon and @serhiy-storchaka: Backport status check is done, and it's a success ✅ . |
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Thanks! |
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The hash implementation casts the input pointer to uint64_t* and directly reads
from this, which may cause unaligned accesses. Use memcpy() instead so this code
will not crash with SIGBUS on sparc.
https://bugs.gentoo.org/show_bug.cgi?id=636400
(cherry picked from commit 1e2ec8a)
Co-authored-by: Rolf Eike Beer eike@sf-mail.de
https://bugs.python.org/issue28055