vulnerability
Ubuntu: (CVE-2019-15847): gcc-7 vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:P/I:N/A:N) | Sep 2, 2019 | Nov 19, 2024 | Aug 19, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
Sep 2, 2019
Added
Nov 19, 2024
Modified
Aug 19, 2025
Description
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.
Solutions
ubuntu-upgrade-gcc-10ubuntu-upgrade-gcc-7ubuntu-upgrade-gcc-8
References
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