high7.5
CVE-2019-15847
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 re…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Gnu | Gcc | before 7.5.0 from 8.0 before 8.4.0 from 9.0 before 9.3.0 from 10.0 before 10.1.0 |
| Opensuse | Leap | Versions 15.0, 15.1 |
Weakness classification
References
- NVD record
- CVE.org record
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00056.html
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00057.html
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00058.html
- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91481
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html