What is the CVSS score of CVE-2020-36791?

CVE-2020-36791 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H. EPSS exploitation probability: 0.1%.

Which versions of Linux are affected by CVE-2020-36791?

CVE-2020-36791 presents moderate security risk, a out-of-bounds read vulnerability rated CVSS 7.1. Exploitation could compromise the security of affected deployments.. A patch is available.

How to fix or mitigate CVE-2020-36791?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Vendor patch is available.

Linux CVE-2020-36791

HIGH

Out-of-bounds Read (CWE-125)

2025-05-07 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Buffer Overflow Information Disclosure Linux

7.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.1 HIGH

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

SUSE

HIGH

qualitative

Red Hat

5.5 MEDIUM

qualitative

Primary rating from NVD.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:40 vuln.today

Patch released

Mar 28, 2026 - 18:40 nvd

Patch available

CVE Published

May 07, 2025 - 14:15 nvd

HIGH 7.1

DescriptionNVD

In the Linux kernel, the following vulnerability has been resolved:

net_sched: keep alloc_hash updated after hash allocation

In commit 599be01ee567 ("net_sched: fix an OOB access in cls_tcindex") I moved cp->hash calculation before the first tcindex_alloc_perfect_hash(), but cp->alloc_hash is left untouched. This difference could lead to another out of bound access.

cp->alloc_hash should always be the size allocated, we should update it after this tcindex_alloc_perfect_hash().

AnalysisAI

In the Linux kernel, the following vulnerability has been resolved: net_sched: keep alloc_hash updated after hash allocation In commit 599be01ee567 ("net_sched: fix an OOB access in cls_tcindex") I. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity. This Out-of-bounds Read vulnerability could allow attackers to read data from memory outside the intended buffer boundaries.

Technical ContextAI

This vulnerability is classified as Out-of-bounds Read (CWE-125), which allows attackers to read data from memory outside the intended buffer boundaries. In the Linux kernel, the following vulnerability has been resolved: net_sched: keep alloc_hash updated after hash allocation In commit 599be01ee567 ("net_sched: fix an OOB access in cls_tcindex") I moved cp->hash calculation before the first tcindex_alloc_perfect_hash(), but cp->alloc_hash is left untouched. This difference could lead to another out of bound access. cp->alloc_hash should always be the size allocated, we should update it after this tcindex_alloc_perfect_hash(). Affected products include: Linux Linux Kernel.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate array indices and buffer lengths. Use memory-safe languages. Enable AddressSanitizer during testing.

Same weakness CWE-125 – Out-of-bounds Read

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Vendor StatusVendor

SUSE

Severity: High

Product	Status
Container suse/sle-micro-rancher/5.2:latest Image SLES15-SP3-Micro-5-2-BYOS-Azure Image SLES15-SP3-Micro-5-2-BYOS-EC2-HVM Image SLES15-SP3-Micro-5-2-BYOS-GCE	Affected
Image SLES12-SP5-Azure-BYOS Image SLES12-SP5-Azure-HPC-BYOS Image SLES12-SP5-EC2-BYOS Image SLES12-SP5-EC2-ECS-On-Demand Image SLES12-SP5-EC2-On-Demand Image SLES12-SP5-GCE-BYOS Image SLES12-SP5-GCE-On-Demand	Affected
Image SLES12-SP5-Azure-SAP-BYOS Image SLES12-SP5-Azure-SAP-On-Demand Image SLES12-SP5-EC2-SAP-BYOS Image SLES12-SP5-EC2-SAP-On-Demand Image SLES12-SP5-GCE-SAP-BYOS Image SLES12-SP5-GCE-SAP-On-Demand Image SLES12-SP5-SAP-Azure-LI-BYOS-Production Image SLES12-SP5-SAP-Azure-VLI-BYOS-Production	Affected
SUSE Enterprise Storage 7.1	Fixed
SUSE Linux Enterprise High Availability Extension 15 SP3	Fixed

CVE-2020-36791 vulnerability details – vuln.today

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Linux CVE-2020-36791

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

Technical ContextAI

RemediationAI

Same weakness CWE-125 – Out-of-bounds Read

Same technique Buffer Overflow

Vendor StatusVendor

SUSE

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External POC / Exploit Code