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.
2002 vulnerabilities reference this CWE, most recent first.
CVE-2020-1683 (GCVE-0-2020-1683)
Vulnerability from cvelistv5 – Published: 2020-10-16 20:31 – Updated: 2024-09-16 22:40
VLAI
EPSS
VEX
Title
Junos OS: Memory leak leads to kernel crash (vmcore) due to SNMP polling
Summary
On Juniper Networks Junos OS devices, a specific SNMP OID poll causes a memory leak which over time leads to a kernel crash (vmcore). Prior to the kernel crash other processes might be impacted, such as failure to establish SSH connection to the device. The administrator can monitor the output of the following command to check if there is memory leak caused by this issue: user@device> show system virtual-memory | match "pfe_ipc|kmem" pfe_ipc 147 5K - 164352 16,32,64,8192 <-- increasing vm.kmem_map_free: 127246336 <-- decreasing pfe_ipc 0 0K - 18598 32,8192 vm.kmem_map_free: 134582272 This issue affects Juniper Networks Junos OS: 17.4R3; 18.1 version 18.1R3-S5 and later versions prior to 18.1R3-S10; 18.2 version 18.2R3 and later versions prior to 18.2R3-S3; 18.2X75 version 18.2X75-D420, 18.2X75-D50 and later versions prior to 18.2X75-D430, 18.2X75-D53, 18.2X75-D60; 18.3 version 18.3R3 and later versions prior to 18.3R3-S2; 18.4 version 18.4R1-S4, 18.4R2 and later versions prior to 18.4R2-S5, 18.4R3-S1; 19.1 version 19.1R2 and later versions prior to 19.1R2-S2, 19.1R3; 19.2 version 19.2R1 and later versions prior to 19.2R1-S5, 19.2R2; 19.3 versions prior to 19.3R2-S5, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2. This issue does not affect Juniper Networks Junos OS prior to 17.4R3.
Severity
7.5 (High)
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA11080 | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
17.4R3
Unaffected: unspecified , < 17.4R3 (custom) Affected: 18.1R3-S5 , < 18.1* (custom) Affected: 18.2R3 , < 18.2* (custom) Affected: 18.2X75-D420, 18.2X75-D50 , < 18.2X75* (custom) Affected: 18.3R3 , < 18.3* (custom) Affected: 18.4R1-S4, 18.4R2 , < 18.4* (custom) Affected: 19.1R2 , < 19.1* (custom) Affected: 19.2R1 , < 19.2* (custom) Affected: 19.3 , < 19.3R2-S5, 19.3R3 (custom) Affected: 19.4 , < 19.4R1-S3, 19.4R2 (custom) |
Date Public
2020-10-14 00:00
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CVE-2019-14818 (GCVE-0-2019-14818)
Vulnerability from cvelistv5 – Published: 2019-11-14 00:00 – Updated: 2024-08-05 00:26
VLAI
EPSS
VEX
Summary
A flaw was found in all dpdk version 17.x.x before 17.11.8, 16.x.x before 16.11.10, 18.x.x before 18.11.4 and 19.x.x before 19.08.1 where a malicious master, or a container with access to vhost_user socket, can send specially crafted VRING_SET_NUM messages, resulting in a memory leak including file descriptors. This flaw could lead to a denial of service condition.
Severity
7.5 (High)
CWE
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://access.redhat.com/errata/RHSA-2020:0166 | vendor-advisory |
| https://access.redhat.com/errata/RHSA-2020:0165 | vendor-advisory |
| https://access.redhat.com/errata/RHSA-2020:0168 | vendor-advisory |
| https://access.redhat.com/errata/RHSA-2020:0172 | vendor-advisory |
| https://access.redhat.com/errata/RHSA-2020:0171 | vendor-advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | |
| https://bugs.dpdk.org/show_bug.cgi?id=363 |
Impacted products
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CVE-2019-5023 (GCVE-0-2019-5023)
Vulnerability from cvelistv5 – Published: 2019-10-31 20:15 – Updated: 2024-08-04 19:40
VLAI
EPSS
VEX
Summary
An exploitable vulnerability exists in the grsecurity PaX patch for the function read_kmem, in PaX from version pax-linux-4.9.8-test1 to 4.9.24-test7, grsecurity official from version grsecurity-3.1-4.9.8-201702060653 to grsecurity-3.1-4.9.24-201704252333, grsecurity unofficial from version v4.9.25-unofficialgrsec to v4.9.74-unofficialgrsec. PaX adds a temp buffer to the read_kmem function, which is never freed when an invalid address is supplied. This results in a memory leakage that can lead to a crash of the system. An attacker needs to induce a read to /dev/kmem using an invalid address to exploit this vulnerability.
Severity
5.9 (Medium)
CWE
- CWE-401 - Improper Release of Memory Before Removing Last Reference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://talosintelligence.com/vulnerability_repor… | x_refsource_MISC |
Impacted products
1 product
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CVE-2019-3815 (GCVE-0-2019-3815)
Vulnerability from cvelistv5 – Published: 2019-01-28 15:00 – Updated: 2024-08-04 19:19
VLAI
EPSS
VEX
Summary
A memory leak was discovered in the backport of fixes for CVE-2018-16864 in Red Hat Enterprise Linux. Function dispatch_message_real() in journald-server.c does not free the memory allocated by set_iovec_field_free() to store the `_CMDLINE=` entry. A local attacker may use this flaw to make systemd-journald crash. This issue only affects versions shipped with Red Hat Enterprise since v219-62.2.
Severity
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://lists.debian.org/debian-lts-announce/2019… | mailing-listx_refsource_MLIST |
| http://www.securityfocus.com/bid/106632 | vdb-entryx_refsource_BID |
| https://access.redhat.com/errata/RHSA-2019:0201 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHBA-2019:0327 | vendor-advisoryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The systemd Project | systemd |
Affected:
v219-62.2 and newer
|
Date Public
2019-01-28 00:00
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CVE-2017-15094 (GCVE-0-2017-15094)
Vulnerability from cvelistv5 – Published: 2018-01-23 15:00 – Updated: 2024-09-16 16:48
VLAI
EPSS
VEX
Summary
An issue has been found in the DNSSEC parsing code of PowerDNS Recursor from 4.0.0 up to and including 4.0.6 leading to a memory leak when parsing specially crafted DNSSEC ECDSA keys. These keys are only parsed when validation is enabled by setting dnssec to a value other than off or process-no-validate (default).
Severity
No CVSS data available.
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://doc.powerdns.com/recursor/security-adviso… | x_refsource_CONFIRM |
| http://www.securityfocus.com/bid/101982 | vdb-entryx_refsource_BID |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| PowerDNS | PowerDNS Recursor |
Affected:
from 4.0.0 up to and including 4.0.6
|
Date Public
2017-11-27 00:00
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CVE-2017-7654 (GCVE-0-2017-7654)
Vulnerability from cvelistv5 – Published: 2018-06-05 20:00 – Updated: 2024-08-05 16:12
VLAI
EPSS
VEX
Summary
In Eclipse Mosquitto 1.4.15 and earlier, a Memory Leak vulnerability was found within the Mosquitto Broker. Unauthenticated clients can send crafted CONNECT packets which could cause a denial of service in the Mosquitto Broker.
Severity
No CVSS data available.
CWE
- CWE-401 - Improper Release of Memory Before Removing Last Reference
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://bugs.eclipse.org/bugs/show_bug.cgi?id=533493 | x_refsource_CONFIRM |
| https://lists.debian.org/debian-lts-announce/2018… | mailing-listx_refsource_MLIST |
| https://www.debian.org/security/2018/dsa-4325 | vendor-advisoryx_refsource_DEBIAN |
| https://usn.ubuntu.com/4023-1/ | vendor-advisoryx_refsource_UBUNTU |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Eclipse Foundation | Eclipse Mosquitto |
Affected:
unspecified , ≤ 1.4.15
(custom)
|
Date Public
2018-06-05 00:00
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},
{
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GHSA-22JX-V9JM-QJQQ
Vulnerability from github – Published: 2025-09-15 15:31 – Updated: 2025-12-03 18:30
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
drm/vkms: Fix memory leak in vkms_init()
A memory leak was reported after the vkms module install failed.
unreferenced object 0xffff88810bc28520 (size 16): comm "modprobe", pid 9662, jiffies 4298009455 (age 42.590s) hex dump (first 16 bytes): 01 01 00 64 81 88 ff ff 00 00 dc 0a 81 88 ff ff ...d............ backtrace: [<00000000e7561ff8>] kmalloc_trace+0x27/0x60 [<000000000b1954a0>] 0xffffffffc45200a9 [<00000000abbf1da0>] do_one_initcall+0xd0/0x4f0 [<000000001505ee87>] do_init_module+0x1a4/0x680 [<00000000958079ad>] load_module+0x6249/0x7110 [<00000000117e4696>] __do_sys_finit_module+0x140/0x200 [<00000000f74b12d2>] do_syscall_64+0x35/0x80 [<000000008fc6fcde>] entry_SYSCALL_64_after_hwframe+0x46/0xb0
The reason is that the vkms_init() returns without checking the return value of vkms_create(), and if the vkms_create() failed, the config allocated at the beginning of vkms_init() is leaked.
vkms_init() config = kmalloc(...) # config allocated ... return vkms_create() # vkms_create failed and config is leaked
Fix this problem by checking return value of vkms_create() and free the config if error happened.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2022-50269"
],
"database_specific": {
"cwe_ids": [
"CWE-401"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-15T15:15:37Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vkms: Fix memory leak in vkms_init()\n\nA memory leak was reported after the vkms module install failed.\n\nunreferenced object 0xffff88810bc28520 (size 16):\n comm \"modprobe\", pid 9662, jiffies 4298009455 (age 42.590s)\n hex dump (first 16 bytes):\n 01 01 00 64 81 88 ff ff 00 00 dc 0a 81 88 ff ff ...d............\n backtrace:\n [\u003c00000000e7561ff8\u003e] kmalloc_trace+0x27/0x60\n [\u003c000000000b1954a0\u003e] 0xffffffffc45200a9\n [\u003c00000000abbf1da0\u003e] do_one_initcall+0xd0/0x4f0\n [\u003c000000001505ee87\u003e] do_init_module+0x1a4/0x680\n [\u003c00000000958079ad\u003e] load_module+0x6249/0x7110\n [\u003c00000000117e4696\u003e] __do_sys_finit_module+0x140/0x200\n [\u003c00000000f74b12d2\u003e] do_syscall_64+0x35/0x80\n [\u003c000000008fc6fcde\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nThe reason is that the vkms_init() returns without checking the return\nvalue of vkms_create(), and if the vkms_create() failed, the config\nallocated at the beginning of vkms_init() is leaked.\n\n vkms_init()\n config = kmalloc(...) # config allocated\n ...\n return vkms_create() # vkms_create failed and config is leaked\n\nFix this problem by checking return value of vkms_create() and free the\nconfig if error happened.",
"id": "GHSA-22jx-v9jm-qjqq",
"modified": "2025-12-03T18:30:19Z",
"published": "2025-09-15T15:31:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50269"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/07ab77154d6fd2d67e465ab5ce30083709950f02"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0d0b368b9d104b437e1f4850ae94bdb9a3601e89"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bad13de764888b765ceaa4668893b52bd16653cc"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bebd60ec3bf21062f103e32e6203c6daabdbd51b"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-23FG-W3CV-JF6W
Vulnerability from github – Published: 2025-09-15 15:31 – Updated: 2025-12-02 03:31
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
scsi: core: Fix possible memory leak if device_add() fails
If device_add() returns error, the name allocated by dev_set_name() needs be freed. As the comment of device_add() says, put_device() should be used to decrease the reference count in the error path. So fix this by calling put_device(), then the name can be freed in kobject_cleanp().
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2023-53174"
],
"database_specific": {
"cwe_ids": [
"CWE-401"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-15T14:15:39Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: core: Fix possible memory leak if device_add() fails\n\nIf device_add() returns error, the name allocated by dev_set_name() needs\nbe freed. As the comment of device_add() says, put_device() should be used\nto decrease the reference count in the error path. So fix this by calling\nput_device(), then the name can be freed in kobject_cleanp().",
"id": "GHSA-23fg-w3cv-jf6w",
"modified": "2025-12-02T03:31:33Z",
"published": "2025-09-15T15:31:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53174"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/04b5b5cb0136ce970333a9c6cec7e46adba1ea3a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/06c5340858011aa1195aec43a776e3185fbf7f56"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/43c0e16d0c5ec59398b405f4c4aa5a076e656c3f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/63956ad27a6882f01fea7c69e17823090f4c7b3f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6bc7f4c8c27d526f968788b8a985896755b1df35"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/aa9a76d5ffdecd3b52ac333eb89361b0c9fe04e8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b191ff1f075c4875f11271cbf0093e6e044a12aa"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e12fac07f61caac9c5b186d827658b3470787619"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-23JM-RV8W-PVXF
Vulnerability from github – Published: 2022-05-24 19:08 – Updated: 2022-05-24 19:08
VLAI
Details
A memory leak vulnerability in sim-organizer.c of AlienVault Ossim v5 causes a denial of service (DOS) via a system crash triggered by the occurrence of a large number of alarm events.
{
"affected": [],
"aliases": [
"CVE-2020-22650"
],
"database_specific": {
"cwe_ids": [
"CWE-401"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-07-19T17:15:00Z",
"severity": "HIGH"
},
"details": "A memory leak vulnerability in sim-organizer.c of AlienVault Ossim v5 causes a denial of service (DOS) via a system crash triggered by the occurrence of a large number of alarm events.",
"id": "GHSA-23jm-rv8w-pvxf",
"modified": "2022-05-24T19:08:22Z",
"published": "2022-05-24T19:08:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-22650"
},
{
"type": "WEB",
"url": "https://github.com/jpalanco/alienvault-ossim/issues/4"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-23QV-WR7M-3W34
Vulnerability from github – Published: 2025-09-18 15:30 – Updated: 2025-12-11 15:30
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
USB: isp1362: fix memory leak with using debugfs_lookup()
When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory will leak over time. To make things simpler, just call debugfs_lookup_and_remove() instead which handles all of the logic at once.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2023-53416"
],
"database_specific": {
"cwe_ids": [
"CWE-401"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-18T14:15:45Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: isp1362: fix memory leak with using debugfs_lookup()\n\nWhen calling debugfs_lookup() the result must have dput() called on it,\notherwise the memory will leak over time. To make things simpler, just\ncall debugfs_lookup_and_remove() instead which handles all of the logic\nat once.",
"id": "GHSA-23qv-wr7m-3w34",
"modified": "2025-12-11T15:30:30Z",
"published": "2025-09-18T15:30:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53416"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9d537c35e48feba9d450acca0ff14a55ce1ec450"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b0a8195a84a725ca7936c213b5e056d2a3ab2a94"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c26e682afc14caa87d44beed271eec8991e93c65"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fb284bee1e213c94be9131d1aca7c16bd6ba259d"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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.