CVE-2017-11671

medium

Published 2017-07-26 · Modified 2026-05-13

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CVSS v3

4.0

CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS v4 NEW

—

not yet in upstream

VIR risk

4.0

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.

Predictions

Exploit likelihood

40%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

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OS impact

OS	Version	Status	Fixed in
sles		affected

Application impact

Vendor	Product	Versions
gnu	gcc	`4.6`
gnu	gcc	`4.7`
gnu	gcc	`4.8`
gnu	gcc	`4.9`
gnu	gcc	`5.0`
gnu	gcc	`5.1`
gnu	gcc	`5.2`
gnu	gcc	`5.3`
gnu	gcc	`5.4`
gnu	gcc	`6.0`
gnu	gcc	`6.1`
gnu	gcc	`6.2`
gnu	gcc	`6.3`

References

CWEs

CWE-338

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.