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CVE Record

CVE-2026-56209: Libaom: libaom: arbitrary address write via svc layer context oob and cyclic refresh map pointer hijack

An arbitrary address write vulnerability was found in libaom, the reference AV1 codec implementation. A missing bounds check in the SVC (Scalable Video Coding) layer ID control function allows an attacker to inject an arbitrary pointer into the cyclic refresh map field via crafted image pixel values. The encoder then writes approximately 1,200 bytes at the attacker-controlled address. This is fully deterministic and does not require a separate information leak. An attacker who can supply frames to a network-facing libaom encoder with SVC enabled could exploit this for denial of service or potential code execution.

HighCVSS 7.1Not KEV-listedUpdated
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CVE-2026-56209 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.1 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
7Timeline events
2ADP providers
44Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.1CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H2.84.2redhat
7.1CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H2.84.2redhat-SADP

Vulnerability scoring details

Base CVSS 3.1 score

7.1High
CVSS 3.1 vector shape for CVE-2026-56209Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. ADP timelineredhat-SADP

    Reported to Red Hat.

  2. ADP timelineredhat-SADP

    Made public.

  3. Source timelineredhat

    Reported to Red Hat.

  4. Source timelineredhat

    Made public.

  5. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  6. CVE publishedCVE Program

    The CVE record was published.

  7. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
redhat-SADPlibaom: libaom: arbitrary address write via SVC layer context OOB and cyclic refresh map pointer hijack
other:Red Hat severity ratingcvssV3_1
  • 2026-06-19T00:00:00.000Z: Reported to Red Hat.
  • 2026-06-19T00:00:00.000Z: Made public.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Red HatRed Hat Enterprise Linux AI 3.3 for RHEL 9aom, 0:3.14.0-1.el9aiaffected
Red HatRed Hat Enterprise Linux AI 3.4 for RHEL 9aom, 0:3.14.0-1.el9aiaffected
Red HatRed Hat Enterprise Linux AI 3.5 for RHEL 9aom, 0:3.14.0-1.el9aiaffected
Red HatRed Hat AI Inference Server 3.2rhaiis/vllm-cuda-rhel9, 1787860580affected
Red HatRed Hat AI Inference Server 3.2rhaiis/model-opt-cuda-rhel9, 1787772157affected
Red HatRed Hat AI Inference Server 3.2rhaiis/vllm-rocm-rhel9, 1787884873affected
Red HatRed Hat AI Inference Server 3.3rhaiis/model-opt-cuda-rhel9, 1789508287affected
Red HatRed Hat AI Inference Server 3.3rhaiis/vllm-spyre-rhel9, 1789502493affected
Red HatRed Hat AI Inference Server 3.3rhaiis/vllm-rocm-rhel9, 1789504371affected
Red HatRed Hat AI Inference Server 3.3rhaiis/vllm-cuda-rhel9, 1789582776affected
Red HatRed Hat Enterprise Linux AI 3.3rhelai3/bootc-aws-cuda-rhel9, 1790936334affected
Red HatRed Hat Enterprise Linux AI 3.3rhelai3/bootc-azure-cuda-rhel9, 1790936351affected
Red HatRed Hat Enterprise Linux AI 3.3rhelai3/bootc-azure-rocm-rhel9, 1790850900affected
Red HatRed Hat Enterprise Linux AI 3.3rhelai3/bootc-cuda-rhel9, 1790866732affected
Red HatRed Hat Enterprise Linux AI 3.3rhelai3/bootc-gcp-cuda-rhel9, 1790936334affected
Red HatRed Hat Enterprise Linux AI 3.3rhelai3/bootc-rocm-rhel9, 1790791893affected
Red HatRed Hat Enterprise Linux AI 3.3rhelai3/disk-image-cuda-rhel9, 1790954179affected
Red HatRed Hat Hardened Imagesaom-main, 3.14.0-0.1.hum1affected
Red HatRed Hat OpenShift AI 3.3rhai/base-image-neuron-rhel9, 1789137552affected
Red HatRed Hat OpenShift AI 3.3rhai/base-image-rocm-7.0-rhel9, 1789137548affected
Red HatRed Hat OpenShift AI 3.3rhai/base-image-cuda-13.0-rhel9, 1789137636affected
Red HatRed Hat OpenShift AI 3.3rhai/base-image-tpu-rhel9, 1789137548affected
Red HatRed Hat OpenShift AI 3.3rhai/base-image-rocm-6.4-rhel9, 1789137548affected
Red HatRed Hat OpenShift AI 3.3rhai/base-image-cpu-rhel9, 1789137641affected
Red HatRed Hat OpenShift AI 3.3rhai/base-image-spyre-rhel9, 1789137607affected
Red HatRed Hat OpenShift AI 3.3rhai/base-image-cuda-12.9-rhel9, 1789137636affected
Red HatRed Hat OpenShift AI 3.4rhoai/odh-mlserver-rhel9, 1786611800affected
Red HatRed Hat OpenShift AI 3.4rhoai/odh-th06-cpu-torch210-py312-rhel9, 1787076778affected
Red HatRed Hat OpenShift AI 3.4rhoai/odh-th06-cuda130-torch210-py312-rhel9, 1787077779affected
Red HatRed Hat OpenShift AI 3.4rhoai/odh-th06-rocm64-torch291-py312-rhel9, 1787076481affected
Weakness

CWE details

CWE-787

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

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Out-of-bounds Write

Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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