Common Weakness Enumeration

CWE-416

Allowed

Use After Free

Abstraction: Variant · Status: Stable

API response cwe.mitre.org

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

9821 vulnerabilities reference this CWE, most recent first.

CVE-2021-3715 (GCVE-0-2021-3715)

Vulnerability from cvelistv5 – Published: 2022-03-02 22:17 – Updated: 2024-08-03 17:01
VLAI
Summary
A flaw was found in the "Routing decision" classifier in the Linux kernel's Traffic Control networking subsystem in the way it handled changing of classification filters, leading to a use-after-free condition. This flaw allows unprivileged local users to escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a kernel Affected: Linux kernel 5.10
Show details on NVD website
To clipboard 

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CVE-2021-3700 (GCVE-0-2021-3700)

Vulnerability from cvelistv5 – Published: 2022-02-24 18:50 – Updated: 2024-08-03 17:01
VLAI
Summary
A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a usbredir Affected: usbredir 0.11.0
Show details on NVD website
To clipboard 

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CVE-2021-3543 (GCVE-0-2021-3543)

Vulnerability from cvelistv5 – Published: 2021-06-01 13:20 – Updated: 2024-08-03 17:01
VLAI
Summary
A flaw null pointer dereference in the Nitro Enclaves kernel driver was found in the way that Enclaves VMs forces closures on the enclave file descriptor. A local user of a host machine could use this flaw to crash the system or escalate their privileges on the system.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a kernel Affected: kernel 4.18.0
Show details on NVD website
To clipboard 

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CVE-2021-3518 (GCVE-0-2021-3518)

Vulnerability from cvelistv5 – Published: 2021-05-18 11:20 – Updated: 2024-08-03 17:01
VLAI
Summary
There's a flaw in libxml2 in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by an application linked with libxml2 could trigger a use-after-free. The greatest impact from this flaw is to confidentiality, integrity, and availability.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a libxml2 Affected: libxml2 2.9.11
Show details on NVD website
To clipboard 

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CVE-2021-3516 (GCVE-0-2021-3516)

Vulnerability from cvelistv5 – Published: 2021-06-01 13:38 – Updated: 2024-08-03 16:53
VLAI
Summary
There's a flaw in libxml2's xmllint in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by xmllint could trigger a use-after-free. The greatest impact of this flaw is to confidentiality, integrity, and availability.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a libxml2 Affected: libxml2 2.9.11
Show details on NVD website
To clipboard 

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CVE-2021-3497 (GCVE-0-2021-3497)

Vulnerability from cvelistv5 – Published: 2021-04-19 20:22 – Updated: 2024-08-03 16:53
VLAI
Summary
GStreamer before 1.18.4 might access already-freed memory in error code paths when demuxing certain malformed Matroska files.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a gstreamer-plugins-good Affected: gstreamer-plugins-good 1.18.4
Show details on NVD website
To clipboard 

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CVE-2021-3483 (GCVE-0-2021-3483)

Vulnerability from cvelistv5 – Published: 2021-05-17 11:25 – Updated: 2024-08-03 16:53
VLAI
Summary
A flaw was found in the Nosy driver in the Linux kernel. This issue allows a device to be inserted twice into a doubly-linked list, leading to a use-after-free when one of these devices is removed. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Versions before kernel 5.12-rc6 are affected
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a kernel Affected: kernel 5.12-rc6
Show details on NVD website
To clipboard 

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CVE-2021-3455 (GCVE-0-2021-3455)

Vulnerability from cvelistv5 – Published: 2021-10-19 22:25 – Updated: 2024-09-16 18:38
VLAI
Title
Disconnecting L2CAP channel right after invalid ATT request leads freeze
Summary
Disconnecting L2CAP channel right after invalid ATT request leads freeze. Zephyr versions >= 2.4.0, >= 2.5.0 contain Use After Free (CWE-416). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7g38-3x9v-v7vp
Severity
4.3 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-416 - Use After Free (CWE-416)
Assigner
References
Impacted products
Vendor Product Version
zephyrproject-rtos zephyr Affected: 2.4.0 , < unspecified (custom)
Affected: 2.5.0 , < unspecified (custom)
Create a notification for this product.
Date Public
2021-06-19 00:00
Show details on NVD website
To clipboard 

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CVE-2021-3403 (GCVE-0-2021-3403)

Vulnerability from cvelistv5 – Published: 2021-03-04 21:10 – Updated: 2024-08-03 16:53
VLAI
Summary
In ytnef 1.9.3, the TNEFSubjectHandler function in lib/ytnef.c allows remote attackers to cause a denial-of-service (and potentially code execution) due to a double free which can be triggered via a crafted file.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a ytnef Affected: All versions
Show details on NVD website
To clipboard 

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CVE-2021-3392 (GCVE-0-2021-3392)

Vulnerability from cvelistv5 – Published: 2021-03-23 19:07 – Updated: 2024-08-03 16:53
VLAI
Summary
A use-after-free flaw was found in the MegaRAID emulator of QEMU. This issue occurs while processing SCSI I/O requests in the case of an error mptsas_free_request() that does not dequeue the request object 'req' from a pending requests queue. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. Versions between 2.10.0 and 5.2.0 are potentially affected.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a QEMU Affected: between 2.10.0 and 5.2.0
Show details on NVD website
To clipboard 

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Mitigation
Architecture and Design

Strategy: Language Selection

Choose a language that provides automatic memory management.

Mitigation
Implementation

Strategy: Attack Surface Reduction

When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.

No CAPEC attack patterns related to this CWE.

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