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TI-2020-15660 Aliases CVE-2020-25643GHSA-vhhq-pmj4-x7gm

Improper input validation in kernel

Priority LOW 38CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 13 fixed, 3 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Why it matters now

EPSS 0.03292 88th percentileScored 2026-11-07
Fix Partial Red Hat: 4 advisoriesRed Hat: 13 fixed, 3 without a fix

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
—kernelLinux kernel versions before 5.9-rc7—No fix listedCNA
  • kernel Vendor— Affected Linux kernel versions before 5.9-rc7 Fixed in — No fix listed CNA

CPE configurations NVD · 21

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*2.6.29 to before 4.4.238; 4.5 to before 4.9.238; 4.10 to before 4.14.200; 4.15 to before 4.19.148; 4.20 to before 5.4.68; 5.5 to before 5.8.12VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.9.0:rc1:*:*:*:*:*:*5.9.0 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.9.0:rc2:*:*:*:*:*:*5.9.0 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.9.0:rc3:*:*:*:*:*:*5.9.0 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.9.0:rc4:*:*:*:*:*:*5.9.0 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.9.0:rc5:*:*:*:*:*:*5.9.0 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.9.0:rc6:*:*:*:*:*:*5.9.0 rc6VulnerableLinux
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*15.1VulnerableopenSUSE
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.29 to before 4.4.238; 4.5 to before 4.9.238; 4.10 to before 4.14.200; 4.15 to before 4.19.148; 4.20 to before 5.4.68; 5.5 to before 5.8.12 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.9.0:rc1:*:*:*:*:*:* Versions 5.9.0 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.9.0:rc2:*:*:*:*:*:* Versions 5.9.0 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.9.0:rc3:*:*:*:*:*:* Versions 5.9.0 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.9.0:rc4:*:*:*:*:*:* Versions 5.9.0 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.9.0:rc5:*:*:*:*:*:* Versions 5.9.0 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.9.0:rc6:*:*:*:*:*:* Versions 5.9.0 rc6 Vulnerable ·Linux
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
  • cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE
Show 11 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*15.2VulnerableopenSUSE
cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build12533:*:*:*:vsphere:*:*v8 build12533VulnerableStarwindsoftware
cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build12658:*:*:*:vsphere:*:*v8 build12658VulnerableStarwindsoftware
cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build12859:*:*:*:vsphere:*:*v8 build12859VulnerableStarwindsoftware
cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build13170:*:*:*:vsphere:*:*v8 build13170VulnerableStarwindsoftware
cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build13586:*:*:*:vsphere:*:*v8 build13586VulnerableStarwindsoftware
cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build13861:*:*:*:vsphere:*:*v8 build13861VulnerableStarwindsoftware
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
  • cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* Versions 15.2 Vulnerable ·openSUSE
  • cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build12533:*:*:*:vsphere:*:* Versions v8 build12533 Vulnerable ·Starwindsoftware
  • cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build12658:*:*:*:vsphere:*:* Versions v8 build12658 Vulnerable ·Starwindsoftware
  • cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build12859:*:*:*:vsphere:*:* Versions v8 build12859 Vulnerable ·Starwindsoftware
  • cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build13170:*:*:*:vsphere:*:* Versions v8 build13170 Vulnerable ·Starwindsoftware
  • cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build13586:*:*:*:vsphere:*:* Versions v8 build13586 Vulnerable ·Starwindsoftware
  • cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build13861:*:*:*:vsphere:*:* Versions v8 build13861 Vulnerable ·Starwindsoftware

Remediation

Red Hat 4 advisories

  • RHSA-2021:1739 Released 2021-05-18 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt-4.18.0-305.rt7.72.el8, kernel-rt-core-4.18.0-305.rt7.72.el8, kernel-rt-debug-4.18.0-305.rt7.72.el8 +7
    • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt-4.18.0-305.rt7.72.el8, kernel-rt-core-4.18.0-305.rt7.72.el8, kernel-rt-debug-4.18.0-305.rt7.72.el8 +9
  • RHSA-2021:1578 Released 2021-05-18 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-305.el8
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-305.el8, kernel-4.18.0-305.el8, kernel-abi-stablelists-4.18.0-305.el8 +19
  • RHSA-2020:5437 Released 2020-12-15 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-1160.11.1.el7, kernel-3.10.0-1160.11.1.el7, kernel-abi-whitelists-3.10.0-1160.11.1.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.11.1.el7
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.11.1.el7
    • Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-1160.11.1.el7, kernel-3.10.0-1160.11.1.el7, kernel-abi-whitelists-3.10.0-1160.11.1.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-1160.11.1.el7, kernel-tools-libs-devel-3.10.0-1160.11.1.el7
    • Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-1160.11.1.el7, kernel-3.10.0-1160.11.1.el7, kernel-abi-whitelists-3.10.0-1160.11.1.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.11.1.el7
Show 1 more Red Hat advisories
  • RHSA-2020:5441 Released 2020-12-15 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-1160.11.1.rt56.1145.el7, kernel-rt-debug-3.10.0-1160.11.1.rt56.1145.el7, kernel-rt-debug-devel-3.10.0-1160.11.1.rt56.1145.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-1160.11.1.rt56.1145.el7, kernel-rt-debug-3.10.0-1160.11.1.rt56.1145.el7, kernel-rt-debug-devel-3.10.0-1160.11.1.rt56.1145.el7 +7

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Will not fix
Red Hat Enterprise MRG 2AffectedNo fix planned: Out of support scope
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2021:1578
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2021:1578
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2020:5437
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2020:5437
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2020:5437
Red Hat Enterprise Linux Real Time (v. 8)Fixed RHSA-2021:1739
Red Hat Enterprise Linux Real Time for NFV (v. 8)Fixed RHSA-2021:1739
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2020:5437
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2020:5437
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2020:5437
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2020:5437
Red Hat Enterprise Linux for Real Time (v. 7)Fixed RHSA-2020:5441
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2020:5441
Not affected: 1 product
  • Red Hat Enterprise Linux 5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-25643
  2. 2026-10-03 Alias added: GHSA-vhhq-pmj4-x7gm

References

Patch 2

Advisory 8

Sources

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