Read the docs
TI-2018-12795 Aliases CVE-2018-17972GHSA-qgp4-5xqg-pc3p

An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux…

Priority LOW 25CWE-362Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
Partial Red Hat: 20 fixed, 1 without a fix

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

Summary

An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents.

Why it matters now

EPSS 0.00364 30th percentileScored 2026-11-07
Fix Partial Red Hat: 4 advisoriesRed Hat: 20 fixed, 1 without a fix

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 · 14

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*up to 4.18.11VulnerableLinux
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*12.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*18.10VulnerableCanonical
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions up to 4.18.11 Vulnerable ·Linux
  • cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* Versions 12.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* Versions 18.10 Vulnerable ·Canonical
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
Show 4 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian

Remediation

Red Hat 4 advisories

  • RHSA-2019:2473 Released 2019-08-13 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-754.18.2.el6, kernel-abi-whitelists-2.6.32-754.18.2.el6, kernel-debug-2.6.32-754.18.2.el6 +5
    • Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf-2.6.32-754.18.2.el6
    • Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-754.18.2.el6, kernel-abi-whitelists-2.6.32-754.18.2.el6, kernel-debug-2.6.32-754.18.2.el6 +5
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf-2.6.32-754.18.2.el6
    • Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-754.18.2.el6, kernel-abi-whitelists-2.6.32-754.18.2.el6, kernel-bootwrapper-2.6.32-754.18.2.el6 +8
    • Red Hat Enterprise Linux Server Optional (v. 6) python-perf-2.6.32-754.18.2.el6
    • Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-754.18.2.el6, kernel-abi-whitelists-2.6.32-754.18.2.el6, kernel-debug-2.6.32-754.18.2.el6 +5
    • Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf-2.6.32-754.18.2.el6
  • RHSA-2019:0831 Released 2019-04-23 · Red Hat rating Important
    kernel-alt security and bug fix update
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) kernel-4.14.0-115.7.1.el7a, kernel-abi-whitelists-4.14.0-115.7.1.el7a, kernel-alt-4.14.0-115.7.1.el7a +9
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debug-devel-4.14.0-115.7.1.el7a, kernel-tools-libs-devel-4.14.0-115.7.1.el7a
  • RHSA-2019:0512 Released 2019-03-13 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-957.10.1.el7, kernel-3.10.0-957.10.1.el7, kernel-abi-whitelists-3.10.0-957.10.1.el7 +9
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-957.10.1.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) bpftool-3.10.0-957.10.1.el7, kernel-3.10.0-957.10.1.el7, kernel-abi-whitelists-3.10.0-957.10.1.el7 +9
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-957.10.1.el7
    • Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-957.10.1.el7, kernel-3.10.0-957.10.1.el7, kernel-abi-whitelists-3.10.0-957.10.1.el7 +12
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-957.10.1.el7, kernel-tools-libs-devel-3.10.0-957.10.1.el7
    • Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-957.10.1.el7, kernel-3.10.0-957.10.1.el7, kernel-abi-whitelists-3.10.0-957.10.1.el7 +9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-957.10.1.el7
Show 1 more Red Hat advisories
  • RHSA-2019:0514 Released 2019-03-13 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt-3.10.0-957.10.1.rt56.921.el7, kernel-rt-debug-3.10.0-957.10.1.rt56.921.el7, kernel-rt-debug-devel-3.10.0-957.10.1.rt56.921.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-957.10.1.rt56.921.el7, kernel-rt-debug-3.10.0-957.10.1.rt56.921.el7, kernel-rt-debug-devel-3.10.0-957.10.1.rt56.921.el7 +7

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise MRG 2AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2019:0512
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2019:0512
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2019:0512
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2019:0512
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2019:2473
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2019:2473
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2019:2473
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2019:2473
Red Hat Enterprise Linux Realtime (v. 7)Fixed RHSA-2019:0514
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2019:2473
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:0512
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2019:2473
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2019:0512
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2019:2473
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2019:0512
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2019:2473
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2019:0512
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2019:0831
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2019:0831
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2019:0514
Not affected: 2 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-17972
  2. 2026-10-03 Alias added: GHSA-qgp4-5xqg-pc3p

References

Patch 1

Advisory 17

Other 2

Sources

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