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.
384 vulnerabilities reference this CWE, most recent first.
CVE-2026-94652 (GCVE-0-2026-94652)
Vulnerability from cvelistv5 – Published: 2026-10-02 11:54 – Updated: 2026-10-05 16:16
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
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 16:15 UTC
CWE
- CWE-401 - Missing release of memory after effective lifetime
Assigner
apache
CNA
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
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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
VulnCheck
CNA
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 |
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| 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
apache
CNA
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
VulnCheck
CNA
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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CVE-2026-92230 (GCVE-0-2026-92230)
Vulnerability from cvelistv5 – Published: 2026-09-17 18:38 – Updated: 2026-09-18 13:33
VLAI
EPSS
VEX
Title
Apache Karaf: Improper release of ClassLoader references via static ThreadLocal caching
Summary
Apache Karaf's XmlUtils cached XML parser/transformer factories in static ThreadLocal fields on long-lived container threads. Because a ThreadLocal value outlives the OSGi bundle that created it, repeated bundle or feature install, update, or refresh operations can leave successive bundle ClassLoader's pinned in memory and unreachable for garbage collection, leading to unbounded Metaspace growth and eventual denial of service of the Karaf instance.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 13:32 UTC
CWE
Assigner
apache
CNA
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Karaf |
Affected:
0 , < 4.4.11
(semver)
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CVE-2026-91926 (GCVE-0-2026-91926)
Vulnerability from cvelistv5 – Published: 2026-09-15 11:49 – Updated: 2026-11-06 19:56
VLAI
EPSS
VEX
Title
Gss-ntlmssp: gss-ntlmssp: memory leak in ntlm_decode_target_info via duplicated av_pair entries in ntlm challenge
Summary
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Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 14:24 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
redhat
CNA
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-91926 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2533698 | issue-trackingx_refsource_REDHAT |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/a:redhat:enterprise_linux:8
|
Date Public
2026-09-15 00:00
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CVE-2026-90784 (GCVE-0-2026-90784)
Vulnerability from cvelistv5 – Published: 2026-09-14 13:00 – Updated: 2026-09-14 13:59 X_Open Source
VLAI
EPSS
VEX
Title
Dvidelabs flatcc semantics.c fb_clear_parser memory leak
Summary
A vulnerability has been found in Dvidelabs flatcc up to 0.6.3. The impacted element is the function fb_clear_parser of the file src/Compiler/semantics.c. The manipulation leads to memory leak. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of the patch is 8dbc3419738da066151991fd2bf1d0c85591dea2. It is suggested to install a patch to address this issue.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 13:59 UTC
Assigner
VulDB
CNA
References
7 references
| URL | Tags |
|---|---|
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| https://vuldb.com/vuln/403290/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-90784 | third-party-advisory |
| https://vuldb.com/submit/919199 | third-party-advisory |
| https://github.com/dvidelabs/flatcc/issues/389 | exploitissue-tracking |
| https://github.com/dvidelabs/flatcc/commit/8dbc34… | patch |
| https://github.com/dvidelabs/flatcc/ | product |
Impacted products
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CVE-2026-90589 (GCVE-0-2026-90589)
Vulnerability from cvelistv5 – Published: 2026-11-09 22:04 – Updated: 2026-11-09 22:04
VLAI
EPSS
VEX
Title
Memory-mapped thread stack is never unmapped when a thread is aborted by another thread, exhausting kernel virtual address space
Summary
When CONFIG_THREAD_STACK_MEM_MAPPED is enabled, each thread stack is mapped into the kernel virtual address space with a guard page on either side, and the mapping is released during abort cleanup. k_thread_abort_cleanup() in kernel/thread.c has two paths: a deferred one for self-abort, which stashes the mapping in thread_cleanup_stack_addr/thread_cleanup_stack_sz, and an immediate one for a thread aborted by some other thread. The immediate path called do_thread_cleanup(), which ignored its thread argument and only ever unmapped the stashed address — a value populated exclusively by the self-abort path. The mapped stack of a thread aborted by another thread was therefore never unmapped.
Every k_thread_abort() of a non-current thread leaks the thread's stack region plus its two guard pages from the kernel virtual address space. Threads that end by returning from their entry function take the working self-abort path, so the leak is specific to explicit cancellation — k_thread_abort(), pthread_cancel(), osThreadTerminate(), or the kernel thread kill shell command. Both k_thread_create() and k_thread_abort() are system calls, so with CONFIG_USERSPACE an unprivileged user-mode thread that has been granted a thread object and a user-capable stack object can drive the leak from user mode, consuming a kernel-side resource it cannot otherwise touch.
With CONFIG_KERNEL_VM_SIZE defaulting to 8 MB, a few hundred create/abort cycles exhaust the runtime mapping region. k_mem_map_phys_guard() then returns NULL, and map_thread_stack() guards that only with __ASSERT_NO_MSG(), which is compiled out of production builds; thread creation proceeds to write through a NULL-derived stack base and faults in kernel mode. The impact is a persistent denial of service — a kernel fatal error requiring a reboot — with no memory disclosure or corruption, and it is limited to configurations where memory-mapped thread stacks are enabled (x86 targets with X86_MMU and demand paging disabled, where the option is implied by default).
Severity
5.5 (Medium)
CWE
- CWE-401 - dos
Assigner
zephyr
CNA
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zephyrproject | zephyr |
Affected:
3.7.0 , < 4.3.2
(semver)
Affected: 4.4.0 , < 4.5.0 (semver) |
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CVE-2026-87776 (GCVE-0-2026-87776)
Vulnerability from cvelistv5 – Published: 2026-09-11 11:24 – Updated: 2026-09-11 13:36
VLAI
EPSS
VEX
Title
compression vulnerable to Denial of Service via memory leak on premature response close
Summary
compression is a Node.js and Express compression middleware. In versions before 1.8.2, when a client aborts the connection while a compressed response is still being sent, the zlib stream created to compress that response is never destroyed, so each aborted compressed response leaks its native zlib memory. A remote unauthenticated attacker can repeatedly open requests and disconnect early, exhausting the available memory and crashing the server. All applications using compression are affected. The issue is fixed in compression 1.8.2, and users should upgrade to 1.8.2 or later.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 13:30 UTC
Assigner
openjs
CNA
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| compression | compression |
Affected:
0 , < 1.8.2
(semver)
Unaffected: 1.8.2 (semver) |
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CVE-2026-87078 (GCVE-0-2026-87078)
Vulnerability from cvelistv5 – Published: 2026-09-22 07:19 – Updated: 2026-09-22 17:07
VLAI
EPSS
VEX
Title
Net::IDN::Punycode versions from 2.302 before 2.590 for Perl leak the output buffer on every rejected label in decode_punycode
Summary
Net::IDN::Punycode versions from 2.302 before 2.590 for Perl leak the output buffer on every rejected label in decode_punycode.
The XS backend allocates the scalar it returns before it validates the input, sizing the buffer at twice the input length. The scalar is released only on the success path, so each of the three croaks that reject a label leaves the scalar and its buffer allocated. Nothing bounds the label length in the to-Unicode direction, since the 63-byte DNS limit is checked only when converting to ASCII.
Only the XS backend is affected.
A sender who supplies invalid labels grows the process by twice the label length per rejected call, with no successful call needed.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 12:33 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
CPANSec
CNA
References
4 references
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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.