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TI-2017-08978 Aliases CVE-2017-12188GHSA-q7q6-h2q3-86p9

Stack-based buffer overflow in Linux kernel

Priority LOW 34CWE-121Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-121 and the CVSS impact.

Summary

arch/x86/kvm/mmu.c in the Linux kernel through 4.13.5, when nested virtualisation is used, does not properly traverse guest pagetable entries to resolve a guest virtual address, which allows L1 guest OS users to execute arbitrary code on the host OS or cause a denial of service (incorrect index during page walking, and host OS crash), aka an "MMU potential stack buffer overrun."

Why it matters now

EPSS 0.00441 38th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
—Linux kernelLinux kernel—No fix listedCNA
  • Linux kernel Vendor— Affected Linux kernel Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*4.6 to before 4.9.57; 4.10 to before 4.13.8VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.6 to before 4.9.57; 4.10 to before 4.13.8 Vulnerable ·Linux

Remediation

Red Hat 2 advisories

  • RHSA-2018:0395 Released 2018-03-06 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) kernel-3.10.0-693.21.1.el7, kernel-abi-whitelists-3.10.0-693.21.1.el7, kernel-debug-3.10.0-693.21.1.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-693.21.1.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) kernel-3.10.0-693.21.1.el7, kernel-abi-whitelists-3.10.0-693.21.1.el7, kernel-debug-3.10.0-693.21.1.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-693.21.1.el7
    • Red Hat Enterprise Linux Server (v. 7) kernel-3.10.0-693.21.1.el7, kernel-abi-whitelists-3.10.0-693.21.1.el7, kernel-bootwrapper-3.10.0-693.21.1.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-693.21.1.el7, kernel-tools-libs-devel-3.10.0-693.21.1.el7
    • Red Hat Enterprise Linux Workstation (v. 7) kernel-3.10.0-693.21.1.el7, kernel-abi-whitelists-3.10.0-693.21.1.el7, kernel-debug-3.10.0-693.21.1.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-693.21.1.el7
  • RHSA-2018:0412 Released 2018-03-06 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt-3.10.0-693.21.1.rt56.639.el7, kernel-rt-debug-3.10.0-693.21.1.rt56.639.el7, kernel-rt-debug-devel-3.10.0-693.21.1.rt56.639.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-693.21.1.rt56.639.el7, kernel-rt-debug-3.10.0-693.21.1.rt56.639.el7, kernel-rt-debug-devel-3.10.0-693.21.1.rt56.639.el7 +7

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2018:0395
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2018:0395
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2018:0395
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2018:0395
Red Hat Enterprise Linux Realtime (v. 7)Fixed RHSA-2018:0412
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:0395
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2018:0395
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:0395
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2018:0395
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2018:0412
Not affected: 4 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise MRG 2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-12188
  2. 2026-10-03 Alias added: GHSA-q7q6-h2q3-86p9

References

Patch 3

Advisory 2

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

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