Red Hat Enterprise Linux/Kernel libkcapi memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.2$5k-$25k0.00

Summaryinfo

A vulnerability has been found in Red Hat Enterprise Linux and Kernel and classified as very critical. Impacted is an unknown function of the component libkcapi. Performing a manipulation results in memory corruption. This vulnerability was named CVE-2026-71226. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as very critical, was found in Red Hat Enterprise Linux and Kernel (the affected version unknown). This affects an unknown part of the component libkcapi. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Memory Corruption via Uncanceled AIO Requests on Error: libkcapi's one-shot AIO path can return an error before all submitted IOCBs are drained, allowing later kernel writes into caller-owned output buffers.

The advisory is shared at access.redhat.com. This vulnerability is uniquely identified as CVE-2026-71226 since 08/05/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 09/16/2026).

The vulnerability scanner Nessus provides a plugin with the ID 345945 (AlmaLinux 9 : libkcapi (ALSA-2026:67265)), which helps to determine the existence of the flaw in a target environment.

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

The vulnerability is also documented in the databases at Tenable (345945), EUVD (EUVD-2026-53375) and CERT Bund (WID-SEC-2026-3322). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Red Hat Enterprise Linux
  • RESF Rocky Linux

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 8.2

VulDB Base Score: 9.9
VulDB Temp Score: 9.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.3
NVD Vector: 🔒

CNA Base Score: 7.3
CNA Vector (redhat): 🔒

CVSSv2info

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

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 345945
Nessus Name: AlmaLinux 9 : libkcapi (ALSA-2026:67265)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/05/2026 Advisory disclosed
08/05/2026 +0 days CVE reserved
08/05/2026 +0 days VulDB entry created
09/16/2026 +42 days VulDB entry last update

Sourcesinfo

Vendor: redhat.com

Advisory: access.redhat.com
Status: Not defined

CVE: CVE-2026-71226 (🔒)
GCVE (CVE): GCVE-0-2026-71226
GCVE (VulDB): GCVE-100-386193
EUVD: 🔒
CERT Bund: WID-SEC-2026-3322 - Red Hat Enterprise Linux (libkcapi): Mehrere Schwachstellen

Entryinfo

Created: 08/05/2026 15:23
Updated: 09/16/2026 04:01
Changes: 08/05/2026 15:23 (52), 08/22/2026 21:44 (20), 09/14/2026 13:12 (1), 09/15/2026 11:33 (7), 09/16/2026 04:01 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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