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TI-2018-04203 Aliases CVE-2018-5803GHSA-rw4x-j5hr-xcjv

Improper input validation in backstage Linux Kernel

Priority LOW 26CWE-20Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 21 fixed, 1 without a fix

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

Summary

In the Linux Kernel before version 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102, an error in the "_sctp_make_chunk()" function (net/sctp/sm_make_chunk.c) when handling SCTP packets length can be exploited to cause a kernel crash.

Why it matters now

EPSS 0.00828 57th percentileScored 2026-11-07
Fix Partial Red Hat: 5 advisoriesRed Hat: 21 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
backstageLinux KernelBefore version 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102.—No fix listedCNA
  • Linux Kernel Vendorbackstage Affected Before version 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102. Fixed in — No fix listed CNA

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*before 3.2.102; 3.3 to before 4.1.51; 4.3 to before 4.9.87; 4.10 to before 4.14.25; 4.15 to before 4.15.8VulnerableLinux
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*7.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:*4.0VulnerableRed Hat
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_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 3.2.102; 3.3 to before 4.1.51; 4.3 to before 4.9.87; 4.10 to before 4.14.25; 4.15 to before 4.15.8 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
  • 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_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat

Remediation

Red Hat 5 advisories

  • RHSA-2019:0641 Released 2019-03-26 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt-1:3.10.0-693.46.1.rt56.639.el6rt, kernel-rt-debug-1:3.10.0-693.46.1.rt56.639.el6rt, kernel-rt-debug-devel-1:3.10.0-693.46.1.rt56.639.el6rt +7
  • RHSA-2018:3096 Released 2018-10-30 · Red Hat rating Important
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-957.rt56.910.el7, kernel-rt-debug-3.10.0-957.rt56.910.el7, kernel-rt-debug-devel-3.10.0-957.rt56.910.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-957.rt56.910.el7, kernel-rt-debug-3.10.0-957.rt56.910.el7, kernel-rt-debug-devel-3.10.0-957.rt56.910.el7 +7
  • RHSA-2018:2948 Released 2018-10-30 · Red Hat rating Important
    kernel-alt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) kernel-4.14.0-115.el7a, kernel-abi-whitelists-4.14.0-115.el7a, kernel-alt-4.14.0-115.el7a +9
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debug-devel-4.14.0-115.el7a, kernel-tools-libs-devel-4.14.0-115.el7a
Show 2 more Red Hat advisories
  • RHSA-2018:3083 Released 2018-10-30 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-957.el7, kernel-3.10.0-957.el7, kernel-abi-whitelists-3.10.0-957.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-957.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) bpftool-3.10.0-957.el7, kernel-3.10.0-957.el7, kernel-abi-whitelists-3.10.0-957.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-957.el7
    • Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-957.el7, kernel-3.10.0-957.el7, kernel-abi-whitelists-3.10.0-957.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-957.el7, kernel-tools-libs-devel-3.10.0-957.el7
    • Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-957.el7, kernel-3.10.0-957.el7, kernel-abi-whitelists-3.10.0-957.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-957.el7
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) kernel-3.10.0-957.el7, kernel-abi-whitelists-3.10.0-957.el7, kernel-bootwrapper-3.10.0-957.el7 +10
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debug-devel-3.10.0-957.el7, kernel-tools-libs-devel-3.10.0-957.el7
  • RHSA-2018:1854 Released 2018-06-19 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-754.el6, kernel-abi-whitelists-2.6.32-754.el6, kernel-debug-2.6.32-754.el6 +6
    • Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf-2.6.32-754.el6
    • Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-754.el6, kernel-abi-whitelists-2.6.32-754.el6, kernel-debug-2.6.32-754.el6 +6
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf-2.6.32-754.el6
    • Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-754.el6, kernel-abi-whitelists-2.6.32-754.el6, kernel-bootwrapper-2.6.32-754.el6 +9
    • Red Hat Enterprise Linux Server Optional (v. 6) python-perf-2.6.32-754.el6
    • Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-754.el6, kernel-abi-whitelists-2.6.32-754.el6, kernel-debug-2.6.32-754.el6 +6
    • Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf-2.6.32-754.el6

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2018:3083
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2018:3083
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2018:3083
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2018:3083
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2018:1854
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2018:1854
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2018:1854
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2018:1854
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2018:1854
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:3083
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2018:1854
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2018:3083
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2018:1854
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:3083
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2018:1854
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2018:3083
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2018:2948, RHSA-2018:3083
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2018:2948, RHSA-2018:3083
Red Hat Enterprise Linux for Real Time (v. 7)Fixed RHSA-2018:3096
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2018:3096
Red Hat MRG Realtime for RHEL 6 Server v.2Fixed RHSA-2019:0641
Not affected: 6 products
  • Red Hat Enterprise Linux 8
  • 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 Workstation (v. 7)
  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-5803
  2. 2026-10-03 Alias added: GHSA-rw4x-j5hr-xcjv

References

Advisory 26

  • TI-2026-33119 Malware in 42 @tanstack/* packages exfiltrates cloud credentials, GitHub tokens, and SSH keys KEVCVSS 3.1CRITICAL 9.6
  • TI-2018-10499 Integer overflow in backstage kernel KEVCVSS 3.0HIGH 7.8
  • TI-2024-08998 Remote Code Execution in kedro-org/kedro CVSS 3.0CRITICAL 9.8
  • TI-2023-12294 Dragonfly2 vulnerable to hard coded cyptographic key CVSS 3.1CRITICAL 9.8
  • TI-2021-12074 Authentication vulnerability in MOSN v.0.23.0 allows attacker to escalate privileges via… CVSS 3.1CRITICAL 9.8
  • TI-2019-04061 runc through 1.0-rc6, as used in Docker before 18.09.2 and other products, allows… CVSS 3.1HIGH 8.6
See all 662 →

Sources

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