Common Weakness Enumeration
CWE-415
AllowedDouble Free
Abstraction: Variant · Status: Draft
The product calls free() twice on the same memory address.
1091 vulnerabilities reference this CWE, most recent first.
CVE-2021-22600 (GCVE-0-2021-22600)
Vulnerability from cvelistv5 – Published: 2022-01-26 00:00 – Updated: 2025-10-21 23:15
VLAI
EPSS
VEX
Title
Double Free in net/packet/af_packet.c leading to priviledge escalation
Summary
A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755
Severity
6.6 (Medium)
SSVC
Exploitation: active
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-29 20:47 UTC
CWE
- CWE-415 - Double Free
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | |
| https://lists.debian.org/debian-lts-announce/2022… | mailing-list |
| https://www.debian.org/security/2022/dsa-5096 | vendor-advisory |
| https://security.netapp.com/advisory/ntap-2023011… | |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Linux Kernel | Kernel |
Affected:
unspecified , < 5.4.168
(custom)
Affected: unspecified , < 5.10.88 (custom) Affected: unspecified , < 5.15.11 (custom) Affected: unspecified , < 5.16-rc6 (custom) |
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CVE-2021-21797 (GCVE-0-2021-21797)
Vulnerability from cvelistv5 – Published: 2021-10-18 12:45 – Updated: 2024-08-03 18:23
VLAI
EPSS
VEX
Summary
An exploitable double-free vulnerability exists in the JavaScript implementation of Nitro Pro PDF. A specially crafted document can cause a reference to a timeout object to be stored in two different places. When closed, the document will result in the reference being released twice. This can lead to code execution under the context of the application. An attacker can convince a user to open a document to trigger this vulnerability.
Severity
8.8 (High)
CWE
- CWE-415 - Double Free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://talosintelligence.com/vulnerability_repor… | x_refsource_MISC |
Impacted products
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CVE-2021-4091 (GCVE-0-2021-4091)
Vulnerability from cvelistv5 – Published: 2022-02-18 00:00 – Updated: 2025-11-03 20:33
VLAI
EPSS
VEX
Summary
A double-free was found in the way 389-ds-base handles virtual attributes context in persistent searches. An attacker could send a series of search requests, forcing the server to behave unexpectedly, and crash.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | 389-ds-base |
Affected:
389-ds-base-1.3.10.2
|
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CVE-2021-3564 (GCVE-0-2021-3564)
Vulnerability from cvelistv5 – Published: 2021-06-08 11:59 – Updated: 2024-08-03 17:01
VLAI
EPSS
VEX
Summary
A flaw double-free memory corruption in the Linux kernel HCI device initialization subsystem was found in the way user attach malicious HCI TTY Bluetooth device. A local user could use this flaw to crash the system. This flaw affects all the Linux kernel versions starting from 3.13.
Severity
No CVSS data available.
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2021/05/25/1 | mailing-listx_refsource_MLIST |
| http://www.openwall.com/lists/oss-security/2021/06/01/2 | mailing-listx_refsource_MLIST |
| https://bugzilla.redhat.com/show_bug.cgi?id=1964139 | x_refsource_MISC |
| https://www.openwall.com/lists/oss-security/2021/… | x_refsource_MISC |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
Impacted products
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CVE-2021-3492 (GCVE-0-2021-3492)
Vulnerability from cvelistv5 – Published: 2021-04-17 04:20 – Updated: 2024-09-17 03:54
VLAI
EPSS
VEX
Title
Ubuntu linux kernel shiftfs file system double free vulnerability
Summary
Shiftfs, an out-of-tree stacking file system included in Ubuntu Linux kernels, did not properly handle faults occurring during copy_from_user() correctly. These could lead to either a double-free situation or memory not being freed at all. An attacker could use this to cause a denial of service (kernel memory exhaustion) or gain privileges via executing arbitrary code. AKA ZDI-CAN-13562.
Severity
8.8 (High)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2021/… | x_refsource_MISC |
| https://git.launchpad.net/~ubuntu-kernel/ubuntu/+… | x_refsource_MISC |
| https://git.launchpad.net/~ubuntu-kernel/ubuntu/+… | x_refsource_MISC |
| https://ubuntu.com/security/notices/USN-4917-1 | x_refsource_MISC |
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_refsource_MISC |
| http://packetstormsecurity.com/files/162614/Kerne… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ubuntu | Linux kernel |
Affected:
5.8 kernel , < 5.8.0-50.56
(custom)
Affected: 5.4 kernel , < 5.4.0-72.80 (custom) |
Date Public
2021-04-15 00:00
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CVE-2021-3407 (GCVE-0-2021-3407)
Vulnerability from cvelistv5 – Published: 2021-02-23 22:04 – Updated: 2025-02-13 16:28
VLAI
EPSS
VEX
Summary
A flaw was found in mupdf 1.18.0. Double free of object during linearization may lead to memory corruption and other potential consequences.
Severity
7.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-22 15:23 UTC
CWE
Assigner
References
7 references
| URL | Tags |
|---|---|
| http://git.ghostscript.com/?p=mupdf.git%3Bh=cee7c… | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://security.gentoo.org/glsa/202105-30 | vendor-advisoryx_refsource_GENTOO |
| https://bugs.ghostscript.com/show_bug.cgi?id=703366 |
Impacted products
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CVE-2021-1565 (GCVE-0-2021-1565)
Vulnerability from cvelistv5 – Published: 2021-09-23 02:30 – Updated: 2024-11-07 21:52
VLAI
EPSS
VEX
Title
Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Denial of Service Vulnerabilities
Summary
Multiple vulnerabilities in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Software for Cisco Catalyst 9000 Family Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. These vulnerabilities are due to insufficient validation of CAPWAP packets. An attacker could exploit the vulnerabilities by sending a malformed CAPWAP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-07 21:47 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://tools.cisco.com/security/center/content/C… | vendor-advisoryx_refsource_CISCO |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco IOS XE Software |
Affected:
n/a
|
Date Public
2021-09-22 00:00
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CVE-2021-1119 (GCVE-0-2021-1119)
Vulnerability from cvelistv5 – Published: 2021-10-29 19:30 – Updated: 2024-08-03 15:55
VLAI
EPSS
VEX
Summary
NVIDIA vGPU software contains a vulnerability in the Virtual GPU Manager (vGPU plugin), where it can double-free a pointer, which may lead to denial of service. This flaw may result in a write-what-where condition, allowing an attacker to execute arbitrary code impacting integrity and availability.
Severity
7.1 (High)
CWE
- CWE-415 - Double Free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://nvidia.custhelp.com/app/answers/detail/a_… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NVIDIA | NVIDIA Virtual GPU Software |
Affected:
vGPU version 13.x (prior to 13.1), 12.x (prior to 12.4), version 11.x (prior to 11.6) and version 8.x (prior 8.9).
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CVE-2021-0271 (GCVE-0-2021-0271)
Vulnerability from cvelistv5 – Published: 2021-04-22 19:37 – Updated: 2024-09-16 16:59
VLAI
EPSS
VEX
Title
Junos OS: EX2200-C Series, EX3200 Series, EX3300 Series, EX4200 Series, EX4500 Series, EX4550 Series, EX6210 Series, EX8208 Series, EX8216 Series: Receipt of a crafted ARP packet by an adjacent attacker will cause the sfid process to core.
Summary
A Double Free vulnerability in the software forwarding interface daemon (sfid) process of Juniper Networks Junos OS allows an adjacently-connected attacker to cause a Denial of Service (DoS) by sending a crafted ARP packet to the device. Continued receipt and processing of the crafted ARP packets will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS on EX2200-C Series, EX3200 Series, EX3300 Series, EX4200 Series, EX4500 Series, EX4550 Series, EX6210 Series, EX8208 Series, EX8216 Series. 12.3 versions prior to 12.3R12-S17; 15.1 versions prior to 15.1R7-S8. This issue only affects the listed Marvell-chipset based EX Series devices. No other products or platforms are affected.
Severity
6.5 (Medium)
CWE
- Denial of Service (DoS)
- CWE-415 - Double Free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA11162 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
12.3 , < 12.3R12-S17
(custom)
Affected: 15.1 , < 15.1R7-S8 (custom) |
Date Public
2021-04-14 00:00
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CVE-2020-37239 (GCVE-0-2020-37239)
Vulnerability from cvelistv5 – Published: 2026-05-16 15:25 – Updated: 2026-05-18 18:09
VLAI
EPSS
VEX
Title
libbabl 0.1.62 Broken Double Free Detection Memory Safety
Summary
libbabl 0.1.62 contains a broken double free detection vulnerability that allows attackers to bypass memory safety checks by exploiting signature overwriting in freed chunks. Attackers can call babl_free() twice on the same pointer without triggering detection, as libc's malloc metadata overwrites babl's signature field upon freeing, enabling potential memory corruption and code execution.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-18 18:08 UTC
CWE
- CWE-415 - Double Free
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/49259 | exploit |
| https://www.gegl.org | product |
| https://www.gegl.org/babl/ | product |
| https://www.vulncheck.com/advisories/libbabl-brok… | third-party-advisory |
Impacted products
Date Public
2020-12-14 00:00
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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"problemTypes": [
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"cweId": "CWE-415",
"description": "Double Free",
"lang": "en",
"type": "CWE"
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"dateUpdated": "2026-05-16T15:25:55.585Z",
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"references": [
{
"name": "ExploitDB-49259",
"tags": [
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"url": "https://www.exploit-db.com/exploits/49259"
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{
"name": "Official Product Homepage",
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"url": "https://www.gegl.org"
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{
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"url": "https://www.gegl.org/babl/"
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{
"name": "VulnCheck Advisory: libbabl 0.1.62 Broken Double Free Detection Memory Safety",
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"url": "https://www.vulncheck.com/advisories/libbabl-broken-double-free-detection-memory-safety"
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"title": "libbabl 0.1.62 Broken Double Free Detection Memory Safety",
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"cveMetadata": {
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"assignerShortName": "VulnCheck",
"cveId": "CVE-2020-37239",
"datePublished": "2026-05-16T15:25:55.585Z",
"dateReserved": "2026-05-15T14:52:46.405Z",
"dateUpdated": "2026-05-18T18:09:18.610Z",
"state": "PUBLISHED"
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Mitigation
Architecture and Design
Choose a language that provides automatic memory management.
Mitigation
Implementation
Ensure that each allocation is freed only once. After freeing a chunk, set the pointer to NULL to ensure the pointer cannot be freed again. In complicated error conditions, be sure that clean-up routines respect the state of allocation properly. If the language is object oriented, ensure that object destructors delete each chunk of memory only once.
Mitigation
Implementation
Use a static analysis tool to find double free instances.
No CAPEC attack patterns related to this CWE.