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TI-2020-11222 Aliases CVE-2020-14351GHSA-969c-xcr8-6f87

Use after free in kernel

Priority LOW 34CWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 36 fixed, 4 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

A flaw was found in the Linux kernel. A use-after-free memory flaw was found in the perf subsystem allowing a local attacker with permission to monitor perf events to corrupt memory and possibly escalate privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Why it matters now

EPSS 0.00306 23rd percentileScored 2026-11-07
Fix Partial Red Hat: 11 advisoriesRed Hat: 36 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
—kernelkernel 5.8.17—No fix listedCNA
  • kernel Vendor— Affected kernel 5.8.17 Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*before 5.8.17VulnerableLinux
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:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 5.8.17 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:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian

Remediation

Red Hat 11 advisories

  • RHSA-2021:1267 Released 2021-04-20 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Server AUS (v. 7.4) kernel-3.10.0-693.84.1.el7, kernel-abi-whitelists-3.10.0-693.84.1.el7, kernel-debug-3.10.0-693.84.1.el7 +7
    • Red Hat Enterprise Linux Server E4S (v. 7.4) kernel-3.10.0-693.84.1.el7, kernel-abi-whitelists-3.10.0-693.84.1.el7, kernel-bootwrapper-3.10.0-693.84.1.el7 +8
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.4) kernel-tools-libs-devel-3.10.0-693.84.1.el7
    • Red Hat Enterprise Linux Server Optional E4S (v. 7.4) kernel-debug-devel-3.10.0-693.84.1.el7, kernel-tools-libs-devel-3.10.0-693.84.1.el7
    • Red Hat Enterprise Linux Server Optional TUS (v. 7.4) kernel-tools-libs-devel-3.10.0-693.84.1.el7
    • Red Hat Enterprise Linux Server TUS (v. 7.4) kernel-3.10.0-693.84.1.el7, kernel-abi-whitelists-3.10.0-693.84.1.el7, kernel-debug-3.10.0-693.84.1.el7 +7
  • RHSA-2021:1028 Released 2021-03-30 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.7) bpftool-3.10.0-1062.46.1.el7, kernel-3.10.0-1062.46.1.el7, kernel-abi-whitelists-3.10.0-1062.46.1.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) kernel-tools-libs-devel-3.10.0-1062.46.1.el7
    • Red Hat Enterprise Linux Server EUS (v. 7.7) bpftool-3.10.0-1062.46.1.el7, kernel-3.10.0-1062.46.1.el7, kernel-abi-whitelists-3.10.0-1062.46.1.el7 +11
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.7) kernel-debug-devel-3.10.0-1062.46.1.el7, kernel-tools-libs-devel-3.10.0-1062.46.1.el7
  • RHSA-2021:0878 Released 2021-03-16 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) bpftool-3.10.0-957.70.1.el7, kernel-3.10.0-957.70.1.el7, kernel-abi-whitelists-3.10.0-957.70.1.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) kernel-tools-libs-devel-3.10.0-957.70.1.el7
    • Red Hat Enterprise Linux Server EUS (v. 7.6) bpftool-3.10.0-957.70.1.el7, kernel-3.10.0-957.70.1.el7, kernel-abi-whitelists-3.10.0-957.70.1.el7 +11
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.6) kernel-debug-devel-3.10.0-957.70.1.el7, kernel-tools-libs-devel-3.10.0-957.70.1.el7
    • Red Hat Virtualization 4.2 Hypervisor for RHEL 7.6 EUS kernel-devel-3.10.0-957.70.1.el7, perf-3.10.0-957.70.1.el7, python-perf-3.10.0-957.70.1.el7
Show 8 more Red Hat advisories
  • RHSA-2021:0856 Released 2021-03-16 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-1160.21.1.el7, kernel-3.10.0-1160.21.1.el7, kernel-abi-whitelists-3.10.0-1160.21.1.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.21.1.el7
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.21.1.el7
    • Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-1160.21.1.el7, kernel-3.10.0-1160.21.1.el7, kernel-abi-whitelists-3.10.0-1160.21.1.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-1160.21.1.el7, kernel-tools-libs-devel-3.10.0-1160.21.1.el7
    • Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-1160.21.1.el7, kernel-3.10.0-1160.21.1.el7, kernel-abi-whitelists-3.10.0-1160.21.1.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.21.1.el7
  • RHSA-2021:0857 Released 2021-03-16 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-1160.21.1.rt56.1158.el7, kernel-rt-debug-3.10.0-1160.21.1.rt56.1158.el7, kernel-rt-debug-devel-3.10.0-1160.21.1.rt56.1158.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-1160.21.1.rt56.1158.el7, kernel-rt-debug-3.10.0-1160.21.1.rt56.1158.el7, kernel-rt-debug-devel-3.10.0-1160.21.1.rt56.1158.el7 +7
  • RHSA-2021:0848 Released 2021-03-16 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux Server AUS (v. 7.3) kernel-3.10.0-514.86.1.el7, kernel-abi-whitelists-3.10.0-514.86.1.el7, kernel-debug-3.10.0-514.86.1.el7 +7
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.3) kernel-tools-libs-devel-3.10.0-514.86.1.el7
  • RHSA-2021:0765 Released 2021-03-09 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder EUS (v. 8.2) kernel-tools-libs-devel-4.18.0-193.46.1.el8_2
    • Red Hat Enterprise Linux BaseOS EUS (v. 8.2) bpftool-4.18.0-193.46.1.el8_2, kernel-4.18.0-193.46.1.el8_2, kernel-abi-whitelists-4.18.0-193.46.1.el8_2 +19
  • RHSA-2021:0774 Released 2021-03-09 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time EUS (v. 8.2) kernel-rt-4.18.0-193.46.1.rt13.96.el8_2, kernel-rt-core-4.18.0-193.46.1.rt13.96.el8_2, kernel-rt-debug-4.18.0-193.46.1.rt13.96.el8_2 +7
    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2) kernel-rt-4.18.0-193.46.1.rt13.96.el8_2, kernel-rt-core-4.18.0-193.46.1.rt13.96.el8_2, kernel-rt-debug-4.18.0-193.46.1.rt13.96.el8_2 +9
  • RHSA-2021:0686 Released 2021-03-03 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v. 8.1)
    • Red Hat Enterprise Linux BaseOS EUS (v. 8.1) kernel-4.18.0-147.43.1.el8_1, kernel-core-4.18.0-147.43.1.el8_1, kernel-debug-4.18.0-147.43.1.el8_1 +12
  • RHSA-2021:0537 Released 2021-02-16 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt-4.18.0-240.15.1.rt7.69.el8_3, kernel-rt-core-4.18.0-240.15.1.rt7.69.el8_3, kernel-rt-debug-4.18.0-240.15.1.rt7.69.el8_3 +7
    • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt-4.18.0-240.15.1.rt7.69.el8_3, kernel-rt-core-4.18.0-240.15.1.rt7.69.el8_3, kernel-rt-debug-4.18.0-240.15.1.rt7.69.el8_3 +9
  • RHSA-2021:0558 Released 2021-02-16 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-240.15.1.el8_3
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-240.15.1.el8_3, kernel-4.18.0-240.15.1.el8_3, kernel-abi-whitelists-4.18.0-240.15.1.el8_3 +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 yet
Red Hat Enterprise MRG 2AffectedNo fix planned: Will not fix
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2021:0558
Red Hat CodeReady Linux Builder EUS (v. 8.1)Fixed RHSA-2021:0686
Red Hat CodeReady Linux Builder EUS (v. 8.2)Fixed RHSA-2021:0765
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2021:0558
Red Hat Enterprise Linux BaseOS EUS (v. 8.1)Fixed RHSA-2021:0686
Red Hat Enterprise Linux BaseOS EUS (v. 8.2)Fixed RHSA-2021:0765
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2021:0856
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2021:0856
Red Hat Enterprise Linux ComputeNode EUS (v. 7.6)Fixed RHSA-2021:0878
Red Hat Enterprise Linux ComputeNode EUS (v. 7.7)Fixed RHSA-2021:1028
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2021:0856
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6)Fixed RHSA-2021:0878
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7)Fixed RHSA-2021:1028
Red Hat Enterprise Linux Real Time (v. 8)Fixed RHSA-2021:0537
Red Hat Enterprise Linux Real Time EUS (v. 8.2)Fixed RHSA-2021:0774
Red Hat Enterprise Linux Real Time for NFV (v. 8)Fixed RHSA-2021:0537
Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2)Fixed RHSA-2021:0774
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2021:0856
Red Hat Enterprise Linux Server AUS (v. 7.3)Fixed RHSA-2021:0848
Red Hat Enterprise Linux Server AUS (v. 7.4)Fixed RHSA-2021:1267
Red Hat Enterprise Linux Server E4S (v. 7.4)Fixed RHSA-2021:1267
Red Hat Enterprise Linux Server EUS (v. 7.6)Fixed RHSA-2021:0878
Red Hat Enterprise Linux Server EUS (v. 7.7)Fixed RHSA-2021:1028
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2021:0856
Red Hat Enterprise Linux Server Optional AUS (v. 7.3)Fixed RHSA-2021:0848
Red Hat Enterprise Linux Server Optional AUS (v. 7.4)Fixed RHSA-2021:1267
Red Hat Enterprise Linux Server Optional E4S (v. 7.4)Fixed RHSA-2021:1267
Red Hat Enterprise Linux Server Optional EUS (v. 7.6)Fixed RHSA-2021:0878
Red Hat Enterprise Linux Server Optional EUS (v. 7.7)Fixed RHSA-2021:1028
Red Hat Enterprise Linux Server Optional TUS (v. 7.4)Fixed RHSA-2021:1267
Red Hat Enterprise Linux Server TUS (v. 7.4)Fixed RHSA-2021:1267
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2021:0856
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2021:0856
Red Hat Enterprise Linux for Real Time (v. 7)Fixed RHSA-2021:0857
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2021:0857
Red Hat Virtualization 4.2 Hypervisor for RHEL 7.6 EUSFixed RHSA-2021:0878
Not affected: 3 products
  • Red Hat CodeReady Linux Builder EUS (v. 8.1)
  • Red Hat Enterprise Linux BaseOS EUS (v. 8.1)
  • Red Hat Enterprise Linux Server AUS (v. 7.3)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-14351
  2. 2026-10-03 Alias added: GHSA-969c-xcr8-6f87

References

Patch 1

Advisory 2

Sources

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