Common Weakness Enumeration
CWE-401
AllowedMissing Release of Memory after Effective Lifetime
Abstraction: Variant · Status: Draft
The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
2172 vulnerabilities reference this CWE, most recent first.
CVE-2026-104874 (GCVE-0-2026-104874)
Vulnerability from cvelistv5 – Published: 2026-10-02 20:21 – Updated: 2026-10-02 20:21
VLAI
EPSS
VEX
Title
Multidict: Reference leak in CIMultiDict/MultiDict items-view union and subtraction
Summary
Multidict is an implementation of a multidict data structure. From 6.7.0 until 6.9.1, the C extension's items-view reflected union operation, operand | d.items(), in multidict_itemsview_or2_impl and subtraction operation, d.items() - operand, in multidict_itemsview_sub1_impl fail to release new key-identity and value references returned for each operand element. Applications that perform these operations over attacker-influenced sequences can leak two strong references per element, and garbage collection cannot reclaim them, so repeated operations can cause unbounded process memory growth and denial of service. Forward union, intersection, non-tuple operand elements, and pure-Python builds are not affected by this reference leak. This issue is fixed in version 6.9.1.
Severity
5.3 (Medium)
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/multidict/security/ad… | x_refsource_CONFIRM |
| https://github.com/aio-libs/multidict/commit/350b… | x_refsource_MISC |
| https://github.com/aio-libs/multidict/releases/ta… | x_refsource_MISC |
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CVE-2026-102762 (GCVE-0-2026-102762)
Vulnerability from cvelistv5 – Published: 2026-09-29 17:32 – Updated: 2026-09-30 20:39
VLAI
EPSS
VEX
Summary
The NetX Duo MQTT client leaks the packet carrying a malformed PUBLISH message. Each malformed PUBLISH costs one packet, or one chain of packets, from the network driver's receive pool, and nothing returns it. A peer that can deliver a few dozen such messages exhausts the pool and stops all inbound network traffic on the device until it is rebooted.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 20:39 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Eclipse Foundation | NetX Duo |
Affected:
6.0 , ≤ 6.5.1.202602
(semver)
Unaffected: 6.5.2.202603 |
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CVE-2026-102716 (GCVE-0-2026-102716)
Vulnerability from cvelistv5 – Published: 2026-09-29 17:43 – Updated: 2026-09-29 18:41
VLAI
EPSS
VEX
Summary
An unauthenticated client can drain the RTSP server's packet pool with a couple of dozen requests
that carry a Session header the parser cannot convert.
The Session branch returns the raw NetX error code instead of an RTSP status code:
```c
/* addons/rtsp/nx_rtsp_server.c:2754 */
status = _nx_utility_string_to_uint(field_value_ptr, field_value_length, &session_id);
if (status)
{
return(status); /* NX_INVALID_PARAMETERS / NX_SIZE_ERROR / NX_OVERFLOW */
}
```
Every other branch of the same function maps its failure to an RTSP status first. The CSeq branch
eighteen lines earlier does exactly that (line 2736 returns NX_RTSP_STATUS_CODE_BAD_REQUEST). The
raw code then reaches `_nx_rtsp_server_error_response_send` (nx_rtsp_server.c:1234), which does not
recognise it, takes a path that returns without releasing the response packet it already allocated,
and the block never goes back to the pool.
Six requests with an empty Session header against a 22 packet pool:
```
valid requests: after request 6: pool available = 21, AFTER = 22 / 22
malformed requests: after request 6: pool available = 16, AFTER = 17 / 22
```
One block per request, not returned when the client disconnects. Twenty six requests take the pool
to zero and the server starts failing allocations, after which it serves nobody. If the pool is
shared with the rest of the application, as it is in the shipped sample, the rest of the stack
stops with it.
Convert the `_nx_utility_string_to_uint` failure in the Session branch into
NX_RTSP_STATUS_CODE_BAD_REQUEST the way the CSeq branch does, and release the response packet on
every exit path of `_nx_rtsp_server_error_response_send`.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 18:40 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Eclipse Foundation | eclipse-threadx/netxduo |
Affected:
0 , ≤ 6.5.1
(semver)
|
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CVE-2026-102006 (GCVE-0-2026-102006)
Vulnerability from cvelistv5 – Published: 2026-09-28 20:46 – Updated: 2026-09-30 13:42
VLAI
EPSS
VEX
Title
VxWorks 7 Memory allocation
Summary
In Wind River VxWorks 7 prior to 26.09, specific system call arguments can result in the process management subsystem failing to properly release allocated kernel memory before terminating the calling application. Fixed in Version 26.09
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 13:42 UTC
CWE
- CWE-401 - Missing release of memory after effective lifetime
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Wind River Systems Inc | VxWorks 7 |
Affected:
VxWorks 7
|
Date Public
2026-09-28 20:29
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CVE-2026-102005 (GCVE-0-2026-102005)
Vulnerability from cvelistv5 – Published: 2026-09-28 20:15 – Updated: 2026-09-28 20:43
VLAI
EPSS
VEX
Title
VxWorks Memory Allocation
Summary
Wind River VxWorks 7 24.03 through 26.03, a memory leak occurs under specific, non-default configuration states when processing specific service routines, causing the system to terminate operations before releasing allocated memory pools. Fixed in VxWorks 7 26.09
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 20:43 UTC
CWE
- CWE-401 - Missing release of memory after effective lifetime
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Wind River Inc | VxWorks 7 |
Affected:
VxWorks 7
|
Date Public
2026-09-28 20:01
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CVE-2026-95395 (GCVE-0-2026-95395)
Vulnerability from cvelistv5 – Published: 2026-09-29 09:33 – Updated: 2026-09-29 15:51
VLAI
EPSS
VEX
Title
Missing Release of Memory after Effective Lifetime in Wireshark
Summary
IEEE C37.118 Synchrophasor protocol dissector memory leak in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 15:51 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Wireshark Foundation | Wireshark |
Affected:
4.6.0 , < 4.6.9
(semver)
Affected: 4.4.0 , < 4.4.19 (semver) |
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CVE-2026-94652 (GCVE-0-2026-94652)
Vulnerability from cvelistv5 – Published: 2026-10-02 11:54 – Updated: 2026-10-02 11:54
VLAI
EPSS
VEX
Title
Apache Thrift: C++ `TEvhttpServer` leaks its `RequestContext` when the processor throws before calling back
Summary
Missing release of memory after effective lifetime vulnerability in Apache Thrift c++ bindings.
This issue affects Apache Thrift: before 0.25.0.
Users are recommended to upgrade to version 0.25.0, which fixes the issue.
Severity
CWE
- CWE-401 - Missing release of memory after effective lifetime
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/33otcgbqd27wf6qq8… | vendor-advisory |
| https://lists.apache.org/thread/nodwz7gjvogkkh3w1… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Thrift |
Affected:
0 , < 0.25.0
(semver)
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CVE-2026-94627 (GCVE-0-2026-94627)
Vulnerability from cvelistv5 – Published: 2026-09-21 22:04 – Updated: 2026-09-22 12:51
VLAI
EPSS
VEX
Title
vLLM through 0.29.0 GPU KV Cache Leak via Mooncake Transfer ID Collision
Summary
vLLM Mooncake connector through 0.29.0 fails to properly manage GPU KV cache block ownership when concurrent child requests share a single transfer ID in prefill/decode disaggregated deployments. Attackers can trigger GPU memory exhaustion by submitting completion requests with multiple prompts, causing orphaned KV cache blocks to accumulate until process restart and eventually preventing legitimate requests from executing.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 12:50 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/vllm-project/vllm/pull/49796 | issue-trackingpatch |
| https://github.com/vllm-project/vllm/blob/v0.29.0… | technical-description |
| https://github.com/vllm-project/vllm | product |
| https://www.vulncheck.com/advisories/vllm-through… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| vllm-project | vllm |
Affected:
0 , ≤ 0.29.0
(semver)
cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:* |
Date Public
2026-07-25 00:00
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CVE-2026-93926 (GCVE-0-2026-93926)
Vulnerability from cvelistv5 – Published: 2026-10-02 10:13 – Updated: 2026-10-02 10:56
VLAI
EPSS
VEX
Title
Apache Thrift: C++ `THeaderTransport::untransform()` leaks the zlib stream on the error path
Summary
Missing release of memory after effective lifetime, Missing release of resource after effective lifetime vulnerability in Apache Thrift THeaderTransport.
This issue affects Apache Thrift: before 0.25.0.
Users are recommended to upgrade to version 0.25.0, which fixes the issue.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 10:55 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/33otcgbqd27wf6qq8… | vendor-advisory |
| https://lists.apache.org/thread/9353rb8mpoq4ltff8… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Thrift |
Affected:
0 , < 0.25.0
(semver)
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CVE-2026-93436 (GCVE-0-2026-93436)
Vulnerability from cvelistv5 – Published: 2026-09-17 22:15 – Updated: 2026-09-24 14:23
VLAI
EPSS
VEX
Title
vLLM through 0.29.0 Memory Exhaustion via Rejected Requests
Summary
vLLM through 0.29.0 fails to properly clean up decode-side metadata for rejected inference requests in prefill/decode disaggregated deployments. Remote attackers can submit requests with max_tokens=0 to exhaust decode-worker memory without bound until the worker restarts.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 01:58 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/vllm-project/vllm/pull/55677 | issue-trackingpatch |
| https://github.com/vllm-project/vllm/blob/v0.29.0… | technical-description |
| https://github.com/vllm-project/vllm | product |
| https://www.vulncheck.com/advisories/vllm-through… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| vllm-project | vllm |
Affected:
0 , ≤ 0.29.0
(semver)
cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:* |
Date Public
2026-09-07 00:00
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Mitigation MIT-41
Implementation
Strategy: Libraries or Frameworks
- Choose a language or tool that provides automatic memory management, or makes manual memory management less error-prone.
- For example, glibc in Linux provides protection against free of invalid pointers.
- When using Xcode to target OS X or iOS, enable automatic reference counting (ARC) [REF-391].
- To help correctly and consistently manage memory when programming in C++, consider using a smart pointer class such as std::auto_ptr (defined by ISO/IEC ISO/IEC 14882:2003), std::shared_ptr and std::unique_ptr (specified by an upcoming revision of the C++ standard, informally referred to as C++ 1x), or equivalent solutions such as Boost.
Mitigation
Architecture and Design
Use an abstraction library to abstract away risky APIs. Not a complete solution.
Mitigation
Architecture and Design
Build and Compilation
Consider using the Boehm-Demers-Weiser garbage collector (bdwgc), which can help avoid leaks.
No CAPEC attack patterns related to this CWE.