Improper Resource Shutdown or Release in Netty - CVE-2026-48006

Vulnerability identifier: #VU133443

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-48006

CWE-ID: CWE-404

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper resource shutdown or release in RedisArrayAggregator when a Redis pipeline connection closes before a RESP array aggregate completes. A remote attacker can repeatedly open and close connections to cause a denial of service.

The issue leaks pooled direct-memory buffers retained in per-handler state, which can exhaust the shared direct-memory pool and trigger allocation failures across Netty channels in the same process.

Netty
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Package Hub 15
Development Tools Module
Netezza Appliance
IBM Sterling File Gateway
IBM Sterling B2B Integrator
Datastax Enterprise with IBM
netty-tcnative
netty-tcnative-debugsource
netty-javadoc
netty
JBoss Data Grid

Install security update from vendor's website.

Netty - addressed in versions 4.1.135, 4.2.15
Netezza Appliance - update to 1.0.2.0
IBM Sterling File Gateway - addressed in versions 6.2.1.2.1, 6.2.2.1.1
IBM Sterling B2B Integrator - addressed in versions 6.2.1.2.1, 6.2.2.1.1
netty-tcnative - update to 2.0.79-150200.3.45.1
netty-tcnative-debugsource - update to 2.0.79-150200.3.45.1
netty-javadoc - update to 4.1.135-150200.4.50.1
netty - update to 4.1.135-150200.4.50.1
Datastax Enterprise with IBM - update to 6.9.24
JBoss Data Grid - update to 8.6.2

• https://github.com/netty/netty/security/advisories/GHSA-6jv9-x5w9-2ccm

• Multiple vulnerabilities in Netty
• SUSE update for netty, netty-tcnative
• IBM Netezza Appliance update for Netty
• Multiple vulnerabilities in JBoss Data Grid 8.6
• Multiple vulnerabilities in IBM Sterling B2B Integrator and IBM Sterling File Gateway
• Multiple vulnerabilities in IBM DataStax Enterprise