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TI-2017-08643 Aliases CVE-2017-11671GHSA-9qgp-g97v-qq69

Under certain circumstances, the ix86_expand_builtin function in i386.c in GNU Compiler…

Priority LOW 19CWE-338Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

EPSS 0.00471 40th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 13

CPEVersionsRoleVendor
cpe:2.3:a:gnu:gcc:4.6:*:*:*:*:*:*:*4.6VulnerableGNU
cpe:2.3:a:gnu:gcc:4.7:*:*:*:*:*:*:*4.7VulnerableGNU
cpe:2.3:a:gnu:gcc:4.8:*:*:*:*:*:*:*4.8VulnerableGNU
cpe:2.3:a:gnu:gcc:4.9:*:*:*:*:*:*:*4.9VulnerableGNU
cpe:2.3:a:gnu:gcc:5.0:*:*:*:*:*:*:*5.0VulnerableGNU
cpe:2.3:a:gnu:gcc:5.1:*:*:*:*:*:*:*5.1VulnerableGNU
cpe:2.3:a:gnu:gcc:5.2:*:*:*:*:*:*:*5.2VulnerableGNU
cpe:2.3:a:gnu:gcc:5.3:*:*:*:*:*:*:*5.3VulnerableGNU
cpe:2.3:a:gnu:gcc:5.4:*:*:*:*:*:*:*5.4VulnerableGNU
cpe:2.3:a:gnu:gcc:6.0:*:*:*:*:*:*:*6.0VulnerableGNU
  • cpe:2.3:a:gnu:gcc:4.6:*:*:*:*:*:*:* Versions 4.6 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gcc:4.7:*:*:*:*:*:*:* Versions 4.7 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gcc:4.8:*:*:*:*:*:*:* Versions 4.8 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gcc:4.9:*:*:*:*:*:*:* Versions 4.9 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gcc:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gcc:5.1:*:*:*:*:*:*:* Versions 5.1 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gcc:5.2:*:*:*:*:*:*:* Versions 5.2 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gcc:5.3:*:*:*:*:*:*:* Versions 5.3 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gcc:5.4:*:*:*:*:*:*:* Versions 5.4 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gcc:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·GNU
Show 3 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:gnu:gcc:6.1:*:*:*:*:*:*:*6.1VulnerableGNU
cpe:2.3:a:gnu:gcc:6.2:*:*:*:*:*:*:*6.2VulnerableGNU
cpe:2.3:a:gnu:gcc:6.3:*:*:*:*:*:*:*6.3VulnerableGNU
  • cpe:2.3:a:gnu:gcc:6.1:*:*:*:*:*:*:* Versions 6.1 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gcc:6.2:*:*:*:*:*:*:* Versions 6.2 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gcc:6.3:*:*:*:*:*:*:* Versions 6.3 Vulnerable ·GNU

Remediation

Red Hat 1 advisory

  • RHSA-2018:0849 Released 2018-04-10 · Red Hat rating Low
    gcc security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) cpp-4.8.5-28.el7, gcc-4.8.5-28.el7, libatomic-4.8.5-28.el7 +6
    • Red Hat Enterprise Linux Client Optional (v. 7) gcc-c++-4.8.5-28.el7, gcc-gfortran-4.8.5-28.el7, gcc-gnat-4.8.5-28.el7 +27
    • Red Hat Enterprise Linux ComputeNode (v. 7) cpp-4.8.5-28.el7, gcc-4.8.5-28.el7, gcc-gfortran-4.8.5-28.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) gcc-c++-4.8.5-28.el7, gcc-gnat-4.8.5-28.el7, gcc-go-4.8.5-28.el7 +25
    • Red Hat Enterprise Linux Server (v. 7) cpp-4.8.5-28.el7, gcc-4.8.5-28.el7, gcc-c++-4.8.5-28.el7 +31
    • Red Hat Enterprise Linux Server Optional (v. 7) gcc-go-4.8.5-28.el7, gcc-plugin-devel-4.8.5-28.el7, libasan-4.8.5-28.el7 +26
    • Red Hat Enterprise Linux Workstation (v. 7) cpp-4.8.5-28.el7, gcc-4.8.5-28.el7, gcc-c++-4.8.5-28.el7 +19
    • Red Hat Enterprise Linux Workstation Optional (v. 7) gcc-go-4.8.5-28.el7, gcc-plugin-devel-4.8.5-28.el7, libasan-4.8.5-28.el7 +14
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) cpp-4.8.5-28.el7, gcc-4.8.5-28.el7, gcc-c++-4.8.5-28.el7 +17
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) gcc-go-4.8.5-28.el7, gcc-plugin-devel-4.8.5-28.el7, libgfortran-static-4.8.5-28.el7 +9

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2018:0849
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2018:0849
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2018:0849
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2018:0849
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:0849
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2018:0849
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:0849
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2018:0849
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2018:0849
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2018:0849
Not affected: 3 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-11671
  2. 2026-10-03 Alias added: GHSA-9qgp-g97v-qq69

References

Advisory 3

Other 1

  • TI-2023-03747 GCC's-fstack-protector fails to guard dynamically-sized local variables on AArch64 CVSS 3.1MEDIUM 4.8
  • TI-2018-09258 stack_protect_prologue in cfgexpand.c and stack_protect_epilogue in function.c in GNU… CVSS 3.0HIGH 8.1
  • TI-2019-11913 The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could optimize… CVSS 3.1HIGH 7.5
  • TI-2008-01316 gcc 4.3.x does not generate a cld instruction while compiling functions used for string… CVSS 2.0HIGH 7.5
  • TI-2021-15306 GCC c++filt v2.26 was discovered to contain a use-after-free vulnerability via the component cplus-dem.c. CVSS 3.1HIGH 7.8
  • TI-2000-01207 The -ftrapv compiler option in gcc and g++ 3.3.3 and earlier does not handle all types of… CVSS 2.0HIGH 7.5
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences