The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could optimize multiple calls of the __builtin_darn intrinsic into a single call, thus reducing the entropy of the random number generator. This occurred because a volatile operation was not specified. For example, within a single execution of a program, the output of every __builtin_darn() call may be the same.
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Published
CVE disclosed publicly
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Added to this platform
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
6
Affected Products
8
References
gnu / gcc +5 more
| - |
| gnu | gcc | 10.0 - 10.1.0 | - |
| opensuse | leap | - | - |
| opensuse | leap | - | - |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploitability
Impact