Resource allocation without limits in IBM DB2 for Linux, UNIX and Windows
Priority LOW 23CWE-770Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-770.
Summary
IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 11.1 and 11.5 under very specific conditions, could allow a local user to keep running a procedure that could cause the system to run out of memory.and cause a denial of service. IBM X-Force ID: 202267.
Why it matters now
EPSS 0.00254 17th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| IBM | DB2 for Linux, UNIX and Windows | 11.1; 11.5 | — | No fix listed | CNA |
- DB2 for Linux, UNIX and Windows VendorIBM Affected 11.1; 11.5 Fixed in — No fix listed CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ibm:db2:11.1:*:*:*:*:-:*:* | 11.1 | Vulnerable | IBM |
| cpe:2.3:a:ibm:db2:11.5:*:*:*:*:-:*:* | 11.5 | Vulnerable | IBM |
| cpe:2.3:o:ibm:aix:-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Linux |
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:opengroup:unix:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Opengroup |
| cpe:2.3:o:oracle:solaris:-:*:*:*:*:*:-:* | not specified by NVD | Running on | Oracle |
- cpe:2.3:a:ibm:db2:11.1:*:*:*:*:-:*:* Versions 11.1 Vulnerable ·IBM
- cpe:2.3:a:ibm:db2:11.5:*:*:*:*:-:*:* Versions 11.5 Vulnerable ·IBM
- cpe:2.3:o:ibm:aix:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Linux
- cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:opengroup:unix:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Opengroup
- cpe:2.3:o:oracle:solaris:-:*:*:*:*:*:-:* Versions not specified by NVD Running on ·Oracle
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-29763
- 2026-10-03 Alias added: GHSA-43mr-gg87-qwf3
References
More IBM Db2 vulnerabilities
- TI-2007-02494 Multiple buffer overflows in the DB2 JDBC Applet Server (DB2JDS) service in IBM DB2 9.x… CVSS 2.0HIGH 10.0
- TI-2010-03546 Stack-based buffer overflow in the validateUser implementation in the… CVSS 2.0HIGH 10.0
- TI-2026-08862 IBM® Db2® is vulnerable to remote code execution due to improper pre-auth DRDA handshake handling CVSS 3.1CRITICAL 9.8
- TI-2007-03566 IBM DB2 Universal Database (UDB) Administration Server (DAS) 8 before Fix Pack 16 and 9… CVSS 2.0HIGH 10.0
- TI-2008-06509 Buffer overflow in the DAS server in IBM DB2 8 before FP17, 9.1 before FP5, and 9.5… CVSS 2.0HIGH 10.0
- TI-2026-09068 IBM® Db2® is vulnerable to privilege escalation with a specially crafted query CVSS 3.1CRITICAL 9.8
Sources
- CVE-2021-29763 · CVE Program
- CVE-2021-29763 · NVD
- FIRST EPSS
- GHSA-43mr-gg87-qwf3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences