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TI-2017-01897 Aliases CVE-2017-2647GHSA-6723-4j9m-72qg

The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges…

Priority LOW 34CWE-476Published · Updated

Key facts

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

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.

Why it matters now

EPSS 0.00408 35th percentileScored 2026-11-07
Fix Fixed Red Hat: 6 advisories

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 · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*up to 3.17.8VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions up to 3.17.8 Vulnerable ·Linux

Remediation

Red Hat 6 advisories

  • RHSA-2020:3836 Released 2020-09-24 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux Server AUS (v. 6.6) kernel-2.6.32-504.84.1.el6, kernel-debug-2.6.32-504.84.1.el6, kernel-debug-devel-2.6.32-504.84.1.el6 +1
    • Red Hat Enterprise Linux Server Optional AUS (v. 6.6)
  • RHSA-2020:3548 Released 2020-08-25 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-754.33.1.el6, kernel-abi-whitelists-2.6.32-754.33.1.el6, kernel-debug-2.6.32-754.33.1.el6 +6
    • Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf-2.6.32-754.33.1.el6
    • Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-754.33.1.el6, kernel-abi-whitelists-2.6.32-754.33.1.el6, kernel-debug-2.6.32-754.33.1.el6 +6
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf-2.6.32-754.33.1.el6
    • Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-754.33.1.el6, kernel-abi-whitelists-2.6.32-754.33.1.el6, kernel-bootwrapper-2.6.32-754.33.1.el6 +9
    • Red Hat Enterprise Linux Server Optional (v. 6) python-perf-2.6.32-754.33.1.el6
    • Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-754.33.1.el6, kernel-abi-whitelists-2.6.32-754.33.1.el6, kernel-debug-2.6.32-754.33.1.el6 +6
    • Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf-2.6.32-754.33.1.el6
  • RHSA-2017:2444 Released 2017-08-08 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt-1:3.10.0-514.rt56.231.el6rt, kernel-rt-debug-1:3.10.0-514.rt56.231.el6rt, kernel-rt-debug-devel-1:3.10.0-514.rt56.231.el6rt +7
Show 3 more Red Hat advisories
  • RHSA-2017:2437 Released 2017-08-08 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.3) kernel-3.10.0-514.28.1.el7, kernel-abi-whitelists-3.10.0-514.28.1.el7, kernel-debug-3.10.0-514.28.1.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3) kernel-tools-libs-devel-3.10.0-514.28.1.el7
    • Red Hat Enterprise Linux Server EUS (v. 7.3) kernel-3.10.0-514.28.1.el7, kernel-abi-whitelists-3.10.0-514.28.1.el7, kernel-bootwrapper-3.10.0-514.28.1.el7 +11
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.3) kernel-debug-devel-3.10.0-514.28.1.el7, kernel-tools-libs-devel-3.10.0-514.28.1.el7
  • RHSA-2017:1842 Released 2017-08-01 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) kernel-3.10.0-693.el7, kernel-abi-whitelists-3.10.0-693.el7, kernel-debug-3.10.0-693.el7 +7
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-693.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) kernel-3.10.0-693.el7, kernel-abi-whitelists-3.10.0-693.el7, kernel-debug-3.10.0-693.el7 +7
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-693.el7
    • Red Hat Enterprise Linux Server (v. 7) kernel-3.10.0-693.el7, kernel-abi-whitelists-3.10.0-693.el7, kernel-bootwrapper-3.10.0-693.el7 +10
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-693.el7, kernel-doc-3.10.0-693.el7, kernel-tools-libs-devel-3.10.0-693.el7
    • Red Hat Enterprise Linux Workstation (v. 7) kernel-3.10.0-693.el7, kernel-abi-whitelists-3.10.0-693.el7, kernel-debug-3.10.0-693.el7 +7
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-693.el7
  • RHSA-2017:2077 Released 2017-08-01 · Red Hat rating Important
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-693.rt56.617.el7, kernel-rt-debug-3.10.0-693.rt56.617.el7, kernel-rt-debug-devel-3.10.0-693.rt56.617.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-693.rt56.617.el7, kernel-rt-debug-3.10.0-693.rt56.617.el7, kernel-rt-debug-devel-3.10.0-693.rt56.617.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-2017:1842
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2017:1842
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2017:1842
Red Hat Enterprise Linux ComputeNode EUS (v. 7.3)Fixed RHSA-2017:2437
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2017:1842
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3)Fixed RHSA-2017:2437
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2020:3548
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2020:3548
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2020:3548
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2020:3548
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2020:3548
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2017:1842
Red Hat Enterprise Linux Server AUS (v. 6.6)Fixed RHSA-2020:3836
Red Hat Enterprise Linux Server EUS (v. 7.3)Fixed RHSA-2017:2437
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2020:3548
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2017:1842
Red Hat Enterprise Linux Server Optional AUS (v. 6.6)Fixed RHSA-2020:3836
Red Hat Enterprise Linux Server Optional EUS (v. 7.3)Fixed RHSA-2017:2437
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2020:3548
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2017:1842
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2020:3548
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2017:1842
Red Hat Enterprise Linux for Real Time (v. 7)Fixed RHSA-2017:2077
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2017:2077
Red Hat MRG Realtime for RHEL 6 Server v.2Fixed RHSA-2017:2444
Not affected: 7 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux Client (v. 7)
  • Red Hat Enterprise Linux ComputeNode (v. 7)
  • Red Hat Enterprise Linux Server (v. 7)
  • Red Hat Enterprise Linux Server AUS (v. 6.6)
  • Red Hat Enterprise Linux Server Optional AUS (v. 6.6)
  • Red Hat Enterprise Linux Workstation (v. 7)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-2647
  2. 2026-10-03 Alias added: GHSA-6723-4j9m-72qg

References

Patch 3

Advisory 6

  • 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