Common Weakness Enumeration
CWE-789
AllowedMemory Allocation with Excessive Size Value
Abstraction: Variant · Status: Draft
The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.
499 vulnerabilities reference this CWE, most recent first.
CVE-2026-66733 (GCVE-0-2026-66733)
Vulnerability from cvelistv5 – Published: 2026-08-06 12:58 – Updated: 2026-08-06 17:54 X_Open Source
VLAI
EPSS
VEX
Title
Sonic 3 A.I.R. Unbounded Memory Allocation DoS via ReceivedPacketCache
Summary
Sonic 3 A.I.R. before commit 2492d18 contains an unbounded memory allocation vulnerability in ReceivedPacketCache::enqueuePacket() that allows unauthenticated remote attackers to crash the server process by sending a crafted UDP packet with mUniquePacketID set to the maximum uint32 value. The mUniquePacketID field is read directly from the UDP wire-format packet header without bounds checking, causing the server to allocate one CacheItem per missing packet ID gap, exhausting available host memory and propagating an uncaught std::bad_alloc exception to std::terminate().
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 17:53 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Eukaryot/sonic3air/commit/2492… | patch |
| https://www.vulncheck.com/advisories/sonic-3-a-i-… | third-party-advisory |
Impacted products
Date Public
2026-07-29 00:00
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CVE-2026-66485 (GCVE-0-2026-66485)
Vulnerability from cvelistv5 – Published: 2026-08-10 10:25 – Updated: 2026-08-10 10:56 X_Open Source
VLAI
EPSS
VEX
Title
Uncontrolled Memory Allocation in GNU cpio
Summary
GNU cpio is vulnerable to an uncontrolled memory allocation in the make_path function at src/makepath.c. The function uses alloca to allocate stack memory based on the length of argpath, which is derived from an archive-controlled pathname during extraction. A malicious cpio archive containing a sufficiently long nested pathname causes an unbounded stack allocation, resulting in a stack overflow and crash of the cpio process. An attacker who can supply a crafted cpio archive to a victim who extracts it can cause a denial of service.
This issue has been fixed in commit 3cd514031371d8aeeaf2048aa10103e02831aaa9
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-10 10:56 UTC
CWE
- CWE-789 - Memory allocation with excessive size value
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/08/CVE-2026-66484 | third-party-advisory |
| https://git.savannah.gnu.org/cgit/cpio.git | product |
Impacted products
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CVE-2026-66273 (GCVE-0-2026-66273)
Vulnerability from cvelistv5 – Published: 2026-08-05 05:23 – Updated: 2026-08-06 13:48
VLAI
EPSS
VEX
Title
Apache Qpid Proton-J: Type size/count handling can lead to excessive allocation pre-authentication
Summary
A pre-authentication attacker could leverage type size/count handling to cause excessive allocation leading to potential denial of service.
This issue affects Apache Qpid Proton-J: through 0.34.1.
Users are recommended to upgrade to version 0.35.0, which fixes the issue.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 13:48 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Qpid Proton-J |
Affected:
0 , ≤ 0.34.1
(semver)
|
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CVE-2026-65315 (GCVE-0-2026-65315)
Vulnerability from cvelistv5 – Published: 2026-07-21 21:18 – Updated: 2026-09-24 14:18
VLAI
EPSS
VEX
Title
Ollama Remote Denial of Service via Attacker-Controlled Allocation in GGUF Metadata Parser
Summary
Ollama (HEAD f0078ae) contains an uncontrolled memory allocation vulnerability in the GGUF metadata parser that allows remote attackers to crash the server by supplying a crafted GGUF file with attacker-controlled length and count fields in string lengths, tensor dimension counts, and metadata array counts that are used as allocation sizes without validation against remaining file size. Attackers can upload a sub-1KB crafted GGUF file via the blob upload and model create or pull API endpoints to trigger unrecoverable Go runtime out-of-memory fatal errors or makeslice panics that bypass recovery middleware and crash the entire server process.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 18:21 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/ollama/ollama/issues/17042 | |
| https://github.com/ollama/ollama | patch |
| https://www.vulncheck.com/advisories/ollama-remot… | third-party-advisory |
Impacted products
Date Public
2026-07-21 00:00
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CVE-2026-63574 (GCVE-0-2026-63574)
Vulnerability from cvelistv5 – Published: 2026-10-02 07:06 – Updated: 2026-10-02 19:23
VLAI
EPSS
VEX
Title
Unbounded allocation from OpenPGP signature and user attribute subpacket lengths
Summary
Memory allocation with excessive size value in the OpenPGP signature and user attribute subpacket parsers (SignatureSubpacketsParser.ReadPacket, UserAttributeSubpacketsParser.ReadPacket) in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote, unauthenticated attacker who can supply a crafted OpenPGP public key, certificate or signature to cause a denial of service (OutOfMemoryException or memory exhaustion in the parsing process) via a subpacket header using the five-octet length form, because the declared length was used to size the subpacket buffer with no upper bound and without being compared with the size of the enclosing subpacket area or packet, so a few bytes of input could demand an allocation of up to about 2 GB before any subpacket data was read.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 19:23 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/bcgit/bc-csharp/wiki/CVE-2026-63574 | vendor-advisory |
| https://github.com/bcgit/bc-csharp/commit/f51dacf… | patch |
| https://github.com/bcgit/bc-csharp/commit/986fb48… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Legion of the Bouncy Castle Inc. | bc-csharp |
Affected:
0 , < 2.7.0
(semver)
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CVE-2026-63566 (GCVE-0-2026-63566)
Vulnerability from cvelistv5 – Published: 2026-10-02 06:57 – Updated: 2026-10-02 18:08
VLAI
EPSS
VEX
Title
DTLS handshake reassembler allocates buffer from unchecked 24-bit length
Summary
Memory allocation with excessive size value in the DTLS handshake reassembly (DtlsReliableHandshake, DtlsReassembler) in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote unauthenticated DTLS peer to cause a denial of service through memory exhaustion via crafted handshake message fragments, because the reassembly buffer for each incoming handshake message was allocated at the 24-bit length declared in the fragment header, without the check against the peer's maximum handshake message size that TLS already applied. A fragment carrying no payload can force an allocation of almost 16 MB, for each of up to 16 pending messages per handshake, before the handshake is authenticated. DTLS servers and DTLS clients are both affected; TLS is not.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 18:07 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/bcgit/bc-csharp/wiki/CVE-2026-63566 | vendor-advisory |
| https://github.com/bcgit/bc-csharp/commit/212d064… | patch |
| https://github.com/bcgit/bc-csharp/commit/99afef6… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Legion of the Bouncy Castle Inc. | bc-csharp |
Affected:
0 , < 2.7.0
(semver)
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CVE-2026-62370 (GCVE-0-2026-62370)
Vulnerability from cvelistv5 – Published: 2026-09-21 17:07 – Updated: 2026-09-29 15:04
VLAI
EPSS
VEX
Title
KubeEdge: Unbounded allocation in viaduct packer enables authenticated remote DoS against CloudHub
Summary
KubeEdge is an open source system for extending native containerized application orchestration capabilities to hosts at Edge. From 1.0.0 until 1.21.2, 1.22.2, and 1.23.1, Reader.Read in pkg/viaduct/pkg/packer trusts the 32-bit PackageHeader.PayloadLen received through the CloudHub viaduct message-processing path and allocates that amount of memory before validating an upper bound. An authenticated malicious or compromised edge peer can repeatedly send crafted headers with excessive declared lengths, causing memory exhaustion, CloudHub process termination or restart loops, and temporary disruption of cloud-edge communication. This issue does not provide unauthenticated access or direct code execution. This issue is fixed in versions 1.21.2, 1.22.2, and 1.23.1.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 15:03 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
13 references
| URL | Tags |
|---|---|
| https://github.com/kubeedge/kubeedge/security/adv… | x_refsource_CONFIRM |
| https://github.com/kubeedge/kubeedge/pull/7028 | x_refsource_MISC |
| https://github.com/kubeedge/kubeedge/pull/7029 | x_refsource_MISC |
| https://github.com/kubeedge/kubeedge/pull/7030 | x_refsource_MISC |
| https://github.com/kubeedge/kubeedge/commit/0fe1e… | x_refsource_MISC |
| https://github.com/kubeedge/kubeedge/commit/725a7… | x_refsource_MISC |
| https://github.com/kubeedge/kubeedge/commit/cc796… | x_refsource_MISC |
| https://github.com/kubeedge/kubeedge/blob/master/… | x_refsource_MISC |
| https://github.com/kubeedge/kubeedge/blob/master/… | x_refsource_MISC |
| https://github.com/kubeedge/kubeedge/blob/master/… | x_refsource_MISC |
| https://github.com/kubeedge/kubeedge/releases/tag… | x_refsource_MISC |
| https://github.com/kubeedge/kubeedge/releases/tag… | x_refsource_MISC |
| https://github.com/kubeedge/kubeedge/releases/tag… | x_refsource_MISC |
Impacted products
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CVE-2026-59991 (GCVE-0-2026-59991)
Vulnerability from cvelistv5 – Published: 2026-09-22 19:11 – Updated: 2026-09-22 19:37
VLAI
EPSS
VEX
Title
psd-tools: Uncontrolled memory allocation in psd-tools composite/numpy via crafted PSD geometry
Summary
psd-tools is a Python package for working with Adobe Photoshop PSD files. Prior to 1.17.4, PSDImage.composite() and PSDImage.numpy() allocated output buffers from attacker-controlled PSD header geometry, including width, height, channels, depth, and per-layer rectangles, before validating those values against the available file data. A tiny crafted PSD could therefore cause multi-gigabyte memory allocation, and PSDImage.composite() could return a black image with only a warning instead of raising an exception. Services that composite untrusted PSD files could be terminated by out-of-memory handling. This issue is fixed in version 1.17.4.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 19:36 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/psd-tools/psd-tools/security/a… | x_refsource_CONFIRM |
| https://github.com/psd-tools/psd-tools/commit/a3d… | x_refsource_MISC |
| https://github.com/psd-tools/psd-tools/releases/t… | x_refsource_MISC |
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CVE-2026-59938 (GCVE-0-2026-59938)
Vulnerability from cvelistv5 – Published: 2026-07-08 17:24 – Updated: 2026-07-09 13:58
VLAI
EPSS
VEX
Title
pypdf: Possible large memory usage for wrong image dimensions
Summary
pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with declared image size values that are much too large compared to the actual data, causing large memory usage in pypdf image parsing. This issue is fixed in version 6.14.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-09 13:58 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/py-pdf/pypdf/security/advisori… | x_refsource_CONFIRM |
| https://github.com/py-pdf/pypdf/pull/3888 | x_refsource_MISC |
| https://github.com/py-pdf/pypdf/commit/c64583be16… | x_refsource_MISC |
| https://github.com/py-pdf/pypdf/releases/tag/6.14.0 | x_refsource_MISC |
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CVE-2026-59844 (GCVE-0-2026-59844)
Vulnerability from cvelistv5 – Published: 2026-07-21 11:32 – Updated: 2026-09-01 20:01
VLAI
EPSS
VEX
Title
Libssh: libssh: denial of service via oversized sftp read length
Summary
A flaw was found in libssh. A remote authenticated client can issue SSH_FXP_READ requests with an arbitrarily large length, causing a libssh SFTP server to allocate excessive memory and potentially exhaust it through repeated requests.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-21 13:11 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:42922 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:55855 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:62217 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:62218 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-59844 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2498177 | issue-trackingx_refsource_REDHAT |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:0.12.0-3.el10_2 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:0.9.6-17.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8::appstream cpe:/o:redhat:enterprise_linux:8::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:0.10.4-19.el9_8 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::appstream cpe:/o:redhat:enterprise_linux:9::baseos |
|
| Red Hat | Red Hat Hardened Images |
Unaffected:
0.12.1-4.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
Date Public
2026-07-21 11:17
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"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:62217"
},
{
"name": "RHSA-2026:62218",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:62218"
},
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-59844"
},
{
"name": "RHBZ#2498177",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2498177"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-04-29T10:03:47.442Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-07-21T11:17:49.367Z",
"value": "Made public."
}
],
"title": "Libssh: libssh: denial of service via oversized sftp read length",
"workarounds": [
{
"lang": "en",
"value": "No workaround available."
}
],
"x_generator": {
"engine": "cvelib 1.8.0"
},
"x_redhatCweChain": "CWE-789: Memory Allocation with Excessive Size Value"
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2026-59844",
"datePublished": "2026-07-21T11:32:16.816Z",
"dateReserved": "2026-07-07T15:40:24.561Z",
"dateUpdated": "2026-09-01T20:01:43.079Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation
Implementation
Architecture and Design
Perform adequate input validation against any value that influences the amount of memory that is allocated. Define an appropriate strategy for handling requests that exceed the limit, and consider supporting a configuration option so that the administrator can extend the amount of memory to be used if necessary.
Mitigation
Operation
Run your program using system-provided resource limits for memory. This might still cause the program to crash or exit, but the impact to the rest of the system will be minimized.
No CAPEC attack patterns related to this CWE.