IBM Db2 10.5.0 through 10.5.11, 11.1.0 through 11.1.4.7, 11.5.0 through 11.5.9, and 12.1.0 through 12.1.3 for Linux, UNIX and Windows (includes Db2 Connect Server) could allow an authenticated user to cause a denial due to the improper release of resources after use.
Advisories

No advisories yet.

Fixes

Solution

Remediation/Fixes Customers running any vulnerable affected level of an affected Program, V10.5, V11.1, V11.5, and V12.1, can download the special build containing the interim fix for this issue from Fix Central. These special builds are available based on the most recent level for each impacted release: V10.5 FP11, V11.1.4 FP7, V11.5.9, V12.1.2 and V12.1.3. They can be applied to any affected level of the appropriate release to remediate this vulnerability. Release Fixed in mod pack APAR Download URL V10.5 TBD DT422191 Special Build for V10.5.11: AIX 64-bit HP-UX 64-bit Linux 32-bit, x86-32 Linux 64-bit, x86-64 Linux 64-bit, POWER™ big endian Linux 64-bit, POWER™ little endian Linux 64-bit, System z®, System z9® or zSeries® Solaris 64-bit, SPARC Solaris 64-bit, x86-64 Windows 32-bit, x86 Windows 64-bit, x86 V11.1 TBD DT422191 Special Build for V11.1.4.7: AIX 64-bit Linux 32-bit, x86-32 Linux 64-bit, x86-64 Linux 64-bit, POWER™ little endian Linux 64-bit, System z®, System z9® or zSeries® Solaris 64-bit, SPARC Windows 32-bit, x86 Windows 64-bit, x86 V11.5 TBD DT422191 Special Build #69673 or later for V11.5.9 available at this link: https://www.ibm.com/support/pages/node/7087189 V12.1 V12.1.3 DT422191 Special Build #70120 or later for V12.1.2 available at this link: https://www.ibm.com/support/pages/db2-v1212-published-cumulative-special-build-downloads IBM does not disclose key Db2 functionality nor replication steps for a vulnerability to avoid providing too much information to any potential malicious attacker. IBM does not want to enable a malicious attacker with sufficient knowledge to craft an exploit of the vulnerability. Note: After December 31, 2025, 11.1 and 10.5 versions of Db2 will not have security fixes made available as they will reach EoS.


Workaround

Workarounds and Mitigations For JCC applications, set queryCloseImplicit property to 2 for the connections. For, CLI and ODBC applications, set SQL_ATTR_EARLYCLOSE property to SQL_EARLYCLOSE_OFF for the statements. Manually recycle connections either by forcing the application handles or by making an application side change (a refresh of the connection pool). You can find the application handles that use most FCM buffers by running db2pd -fcm -member x  (look for the highest buffer consumer) and then force.

History

Fri, 07 Nov 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 07 Nov 2025 19:15:00 +0000

Type Values Removed Values Added
Description IBM Db2 10.5.0 through 10.5.11, 11.1.0 through 11.1.4.7, 11.5.0 through 11.5.9, and 12.1.0 through 12.1.3 for Linux, UNIX and Windows (includes Db2 Connect Server) could allow an authenticated user to cause a denial due to the improper release of resources after use.
Title IBM Db2 denial of service
First Time appeared Ibm
Ibm db2
Weaknesses CWE-404
CPEs cpe:2.3:a:ibm:db2:10.5.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:db2:10.5.11:*:*:*:*:*:*:*
cpe:2.3:a:ibm:db2:11.1.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:db2:11.1.4.7:*:*:*:*:*:*:*
cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:*:*:*
cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:db2:12.1.3:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm db2
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: ibm

Published:

Updated: 2025-11-07T19:15:29.778Z

Reserved: 2025-04-15T21:16:05.532Z

Link: CVE-2025-36006

cve-icon Vulnrichment

Updated: 2025-11-07T19:15:24.935Z

cve-icon NVD

Status : Received

Published: 2025-11-07T19:16:23.770

Modified: 2025-11-07T19:16:23.770

Link: CVE-2025-36006

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.