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TI-2020-17448 Aliases CVE-2020-28915GHSA-v4w4-xxpq-3p77

A buffer over-read (at the framebuffer layer) in the fbcon code in the Linux kernel…

Priority LOW 26CWE-125Published · Updated

Key facts

Attack vector
Physical
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · High · High
Fix status
Partial Red Hat: 5 fixed, 4 without a fix

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

Summary

A buffer over-read (at the framebuffer layer) in the fbcon code in the Linux kernel before 5.8.15 could be used by local attackers to read kernel memory, aka CID-6735b4632def.

Why it matters now

EPSS 0.00379 32nd percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 5 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
——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:*:*:*:*:*:*:*:*before 5.8.15VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 5.8.15 Vulnerable ·Linux

Remediation

Red Hat 2 advisories

  • RHSA-2022:5316 Released 2022-06-30 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-372.13.1.el8_6, kernel-4.18.0-372.13.1.el8_6, kernel-abi-stablelists-4.18.0-372.13.1.el8_6 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-372.13.1.el8_6
    • Red Hat Virtualization 4 Hypervisor for RHEL 8 kernel-devel-4.18.0-372.13.1.el8_6, perf-4.18.0-372.13.1.el8_6
  • RHSA-2022:5344 Released 2022-06-28 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-372.13.1.rt7.170.el8_6, kernel-rt-core-4.18.0-372.13.1.rt7.170.el8_6, kernel-rt-debug-4.18.0-372.13.1.rt7.170.el8_6 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-372.13.1.rt7.170.el8_6, kernel-rt-core-4.18.0-372.13.1.rt7.170.el8_6, kernel-rt-debug-4.18.0-372.13.1.rt7.170.el8_6 +7

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: Will not fix
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2022:5316
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2022:5316
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2022:5344
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2022:5344
Red Hat Virtualization 4 Hypervisor for RHEL 8Fixed RHSA-2022:5316

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-28915
  2. 2026-10-03 Alias added: GHSA-v4w4-xxpq-3p77

References

Patch 3

Advisory 2

  • 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