CVE-2017-11671 Under certain circumstances, the ix86_expand_builtin function in i386.c in GNU Compiler Collection (GCC) version 4.6, 4.7, 4.8, 4.9, 5 before 5.5, and 6 before 6.4 will generate instruction sequences....
MediumCVSS 4.0
EPSS 0.47%
- Published
- Updated
- Exploit status
- No public exploit known
Description
Under certain circumstances, the ix86_expand_builtin function in i386.c in GNU Compiler Collection (GCC) version 4.6, 4.7, 4.8, 4.9, 5 before 5.5, and 6 before 6.4 will generate instruction sequences that clobber the status flag of the RDRAND and RDSEED intrinsics before it can be read, potentially causing failures of these instructions to go unreported. This could potentially lead to less randomness in random number generation.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| GNU gcc | = 4.6 | No fix listed |
| GNU gcc | = 4.7 | No fix listed |
| GNU gcc | = 4.8 | No fix listed |
| GNU gcc | = 4.9 | No fix listed |
| GNU gcc | = 5.0 | No fix listed |
| GNU gcc | = 5.1 | No fix listed |
| GNU gcc | = 5.2 | No fix listed |
| GNU gcc | = 5.3 | No fix listed |
| GNU gcc | = 5.4 | No fix listed |
| GNU gcc | = 6.0 | No fix listed |
| GNU gcc | = 6.1 | No fix listed |
| GNU gcc | = 6.2 | No fix listed |
| GNU gcc | = 6.3 | No fix listed |
| ubuntu/gcc-3.3(Ubuntu:24.04) | All versions | No fix listed |
| ubuntu/gcc-arm-none-eabi(Ubuntu:24.04) | All versions | No fix listed |
| ubuntu/gcc-avr(Ubuntu:24.04) | All versions | No fix listed |
| ubuntu/gcc-h8300-hms(Ubuntu:24.04) | All versions | No fix listed |
| ubuntu/gcc-mingw-w64(Ubuntu:24.04) | All versions | No fix listed |
| ubuntu/gcc-arm-none-eabi(Ubuntu:26.04) | All versions | No fix listed |
| ubuntu/gcc-avr(Ubuntu:26.04) | All versions | No fix listed |
| ubuntu/gcc-h8300-hms(Ubuntu:26.04) | All versions | No fix listed |
| ubuntu/gcc-mingw-w64(Ubuntu:26.04) | All versions | No fix listed |
| ubuntu/gcc-arm-none-eabi(Ubuntu:26.10) | All versions | No fix listed |
| ubuntu/gcc-avr(Ubuntu:26.10) | All versions | No fix listed |
| ubuntu/gcc-h8300-hms(Ubuntu:26.10) | All versions | No fix listed |
Show 8 more
| Product | Affected versions | Fixed in |
|---|---|---|
| ubuntu/gcc-mingw-w64(Ubuntu:26.10) | All versions | No fix listed |
| ubuntu/gcc-3.3(Ubuntu:22.04) | All versions | No fix listed |
| ubuntu/gcc-arm-none-eabi(Ubuntu:22.04) | All versions | No fix listed |
| ubuntu/gcc-avr(Ubuntu:22.04) | All versions | No fix listed |
| ubuntu/gcc-h8300-hms(Ubuntu:22.04) | All versions | No fix listed |
| ubuntu/gcc-m68hc1x(Ubuntu:22.04) | All versions | No fix listed |
| ubuntu/gcc-mingw-w64(Ubuntu:22.04) | All versions | No fix listed |
| ubuntu/gcc-msp430(Ubuntu:22.04) | All versions | No fix listed |
References
- Ubuntu CVE tracker vendor-advisory
- USN-5770-1 vendor-advisory
- www.cve.org
- openwall.com mailing-list third-party-advisory
- 100018 third-party-advisory vdb-entry
- RHSA-2018:0849 vendor-advisory
- gcc.gnu.org issue-tracking vendor-advisory
- gcc.gnu.org mailing-list