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Ubuntu: (CVE-2019-15847): gcc-7 vulnerability

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Ubuntu: (CVE-2019-15847): gcc-7 vulnerability

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
09/02/2019
Created
11/21/2024
Added
11/19/2024
Modified
11/19/2024

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.

Solution(s)

  • ubuntu-upgrade-gcc-10
  • ubuntu-upgrade-gcc-7
  • ubuntu-upgrade-gcc-8

References

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