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TI-2020-11202 Aliases CVE-2020-14331GHSA-x3f8-pg55-6qfg

Out-of-bounds write in Linux Kernel

Priority LOW 30CWE-787Published · Updated

Key facts

Attack vector
Physical
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 13 fixed, 4 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.

Summary

A flaw was found in the Linux kernel’s implementation of the invert video code on VGA consoles when a local attacker attempts to resize the console, calling an ioctl VT_RESIZE, which causes an out-of-bounds write to occur. This flaw allows a local user with access to the VGA console to crash the system, potentially escalating their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Why it matters now

EPSS 0.00563 47th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 4 advisoriesRed Hat: 13 fixed, 4 without a fix

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
—Linux KernelAll versions of the Linux kernel—No fix listedCNA
  • Linux Kernel Vendor— Affected All versions of the Linux kernel Fixed in — No fix listed CNA

CPE configurations NVD · 9

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*up to 5.7.19VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.8.0:rc1:*:*:*:*:*:*5.8.0 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.8.0:rc2:*:*:*:*:*:*5.8.0 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.8.0:rc3:*:*:*:*:*:*5.8.0 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.8.0:rc4:*:*:*:*:*:*5.8.0 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.8.0:rc5:*:*:*:*:*:*5.8.0 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.8.0:rc6:*:*:*:*:*:*5.8.0 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:linux:linux_kernel:*:*:*:*:*:*:*:* Versions up to 5.7.19 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.8.0:rc1:*:*:*:*:*:* Versions 5.8.0 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.8.0:rc2:*:*:*:*:*:* Versions 5.8.0 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.8.0:rc3:*:*:*:*:*:* Versions 5.8.0 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.8.0:rc4:*:*:*:*:*:* Versions 5.8.0 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.8.0:rc5:*:*:*:*:*:* Versions 5.8.0 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.8.0:rc6:*:*:*:*:*:* Versions 5.8.0 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

Remediation

Red Hat 4 advisories

  • RHSA-2020:5023 Released 2020-11-10 · Red Hat rating Moderate
    kernel security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-1160.6.1.el7, kernel-3.10.0-1160.6.1.el7, kernel-abi-whitelists-3.10.0-1160.6.1.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.6.1.el7
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.6.1.el7
    • Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-1160.6.1.el7, kernel-3.10.0-1160.6.1.el7, kernel-abi-whitelists-3.10.0-1160.6.1.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-1160.6.1.el7, kernel-tools-libs-devel-3.10.0-1160.6.1.el7
    • Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-1160.6.1.el7, kernel-3.10.0-1160.6.1.el7, kernel-abi-whitelists-3.10.0-1160.6.1.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.6.1.el7
  • RHSA-2020:5026 Released 2020-11-10 · Red Hat rating Moderate
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-1160.6.1.rt56.1139.el7, kernel-rt-debug-3.10.0-1160.6.1.rt56.1139.el7, kernel-rt-debug-devel-3.10.0-1160.6.1.rt56.1139.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-1160.6.1.rt56.1139.el7, kernel-rt-debug-3.10.0-1160.6.1.rt56.1139.el7, kernel-rt-debug-devel-3.10.0-1160.6.1.rt56.1139.el7 +7
  • RHSA-2020:4289 Released 2020-10-20 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt-4.18.0-193.28.1.rt13.77.el8_2, kernel-rt-core-4.18.0-193.28.1.rt13.77.el8_2, kernel-rt-debug-4.18.0-193.28.1.rt13.77.el8_2 +7
    • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt-4.18.0-193.28.1.rt13.77.el8_2, kernel-rt-core-4.18.0-193.28.1.rt13.77.el8_2, kernel-rt-debug-4.18.0-193.28.1.rt13.77.el8_2 +9
Show 1 more Red Hat advisories
  • RHSA-2020:4286 Released 2020-10-20 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-193.28.1.el8_2
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-193.28.1.el8_2, kernel-4.18.0-193.28.1.el8_2, kernel-abi-whitelists-4.18.0-193.28.1.el8_2 +19

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: Out of support scope
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-2020:4286
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2020:4286
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2020:5023
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2020:5023
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2020:5023
Red Hat Enterprise Linux Real Time (v. 8)Fixed RHSA-2020:4289
Red Hat Enterprise Linux Real Time for NFV (v. 8)Fixed RHSA-2020:4289
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2020:5023
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2020:5023
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2020:5023
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2020:5023
Red Hat Enterprise Linux for Real Time (v. 7)Fixed RHSA-2020:5026
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2020:5026
Not affected: 3 products
  • Red Hat Enterprise Linux Client (v. 7)
  • Red Hat Enterprise Linux Server (v. 7)
  • Red Hat Enterprise Linux Workstation (v. 7)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-14331
  2. 2026-10-03 Alias added: GHSA-x3f8-pg55-6qfg

References

Exploit 1

Patch 1

Advisory 4

Sources

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