Red Hat Enterprise Linux vhost-crypto lib/vhost uninitialized variable

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k1.69-

Summaryinfo

A vulnerability was found in Red Hat Enterprise Linux, Fast Datapath, OpenShift Container Platform and OpenStack Platform. It has been declared as critical. The affected element is an unknown function of the file lib/vhost of the component vhost-crypto. Such manipulation leads to uninitialized variable. This vulnerability is uniquely identified as CVE-2026-86847. Local access is required to approach this attack. No exploit exists.

Detailsinfo

A vulnerability was found in Red Hat Enterprise Linux, Fast Datapath, OpenShift Container Platform and OpenStack Platform (version now known). It has been rated as critical. Affected by this issue is some unknown processing of the file lib/vhost of the component vhost-crypto. The manipulation with an unknown input leads to a uninitialized variable vulnerability. Using CWE to declare the problem leads to CWE-457. The code uses a variable that has not been initialized, leading to unpredictable or unintended results. Impacted is availability. CVE summarizes:

A flaw was found in DPDK lib/vhost vhost-crypto. Write-back chain cleanup can follow an uninitialized next pointer when mapping a guest descriptor fails, causing the host vhost-crypto process to hang or crash.

The advisory is shared for download at access.redhat.com. This vulnerability is handled as CVE-2026-86847 since 09/08/2026. The exploitation is known to be easy. The attack needs to be approached locally. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/14/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 6.0

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (redhat): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Uninitialized variable
CWE: CWE-457 / CWE-453
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/08/2026 CVE reserved
10/14/2026 +36 days Advisory disclosed
10/14/2026 +0 days VulDB entry created
10/14/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: redhat.com

Advisory: access.redhat.com
Status: Not defined

CVE: CVE-2026-86847 (🔒)
GCVE (CVE): GCVE-0-2026-86847
GCVE (VulDB): GCVE-100-420272

Entryinfo

Created: 10/14/2026 20:09
Changes: 10/14/2026 20:09 (62)
Complete: 🔍
Cache ID: 216::103

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