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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

9905 vulnerabilities reference this CWE, most recent first.

CVE-2020-27835 (GCVE-0-2020-27835)

Vulnerability from cvelistv5 – Published: 2021-01-07 17:24 – Updated: 2024-08-04 16:25
VLAI
Summary
A use after free in the Linux kernel infiniband hfi1 driver in versions prior to 5.10-rc6 was found in the way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a kernel Affected: kernel versions prior to 5.10-rc6
Show details on NVD website
To clipboard 

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CVE-2020-27820 (GCVE-0-2020-27820)

Vulnerability from cvelistv5 – Published: 2021-11-02 23:26 – Updated: 2024-08-04 16:25
VLAI
Summary
A vulnerability was found in Linux kernel, where a use-after-frees in nouveau's postclose() handler could happen if removing device (that is not common to remove video card physically without power-off, but same happens if "unbind" the driver).
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a kernel Affected: to be fixed in RHEL-9 release
Show details on NVD website
To clipboard 

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CVE-2020-27786 (GCVE-0-2020-27786)

Vulnerability from cvelistv5 – Published: 2020-12-11 04:05 – Updated: 2024-08-04 16:25
VLAI
Summary
A flaw was found in the Linux kernel’s implementation of MIDI, where an attacker with a local account and the permissions to issue ioctl commands to midi devices could trigger a use-after-free issue. A write to this specific memory while freed and before use causes the flow of execution to change and possibly allow for memory corruption or privilege escalation. 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: kernel 5.7-rc6
Show details on NVD website
To clipboard 

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CVE-2020-27280 (GCVE-0-2020-27280)

Vulnerability from cvelistv5 – Published: 2021-01-26 12:51 – Updated: 2024-08-04 16:11
VLAI
Summary
A use after free issue has been identified in the way ISPSoft(v3.12 and prior) processes project files, allowing an attacker to craft a special project file that may allow arbitrary code execution.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a ISPSoft Affected: v3.12 and prior
Show details on NVD website
To clipboard 

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CVE-2020-27267 (GCVE-0-2020-27267)

Vulnerability from cvelistv5 – Published: 2021-01-13 23:25 – Updated: 2024-08-04 16:11
VLAI
Summary
KEPServerEX v6.0 to v6.9, ThingWorx Kepware Server v6.8 and v6.9, ThingWorx Industrial Connectivity (all versions), OPC-Aggregator (all versions), Rockwell Automation KEPServer Enterprise, GE Digital Industrial Gateway Server v7.68.804 and v7.66, and Software Toolbox TOP Server all 6.x versions, are vulnerable to a heap-based buffer overflow. Opening a specifically crafted OPC UA message could allow an attacker to crash the server and potentially leak data.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a PTC Kepware KEPServerEX Affected: v6.0 to v6.9
n/a ThingWorx Kepware Server Affected: v6.8 and v6.9
n/a ThingWorx Industrial Connectivity Affected: All versions
n/a OPC-Aggregator Affected: All versions
n/a Rockwell Automation KEPServer Enterprise Affected: All versions
n/a GE Digital Industrial Gateway Server Affected: v7.68.804
Affected: v7.66
n/a Software Toolbox TOP Server Affected: All 6.x versions
Show details on NVD website
To clipboard 

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CVE-2020-25725 (GCVE-0-2020-25725)

Vulnerability from cvelistv5 – Published: 2020-11-21 05:29 – Updated: 2024-08-04 15:40
VLAI
Summary
In Xpdf 4.02, SplashOutputDev::endType3Char(GfxState *state) SplashOutputDev.cc:3079 is trying to use the freed `t3GlyphStack->cache`, which causes an `heap-use-after-free` problem. The codes of a previous fix for nested Type 3 characters wasn't correctly handling the case where a Type 3 char referred to another char in the same Type 3 font.
Severity
5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Glyph & Cog xpdf Affected: 4.02
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2020-25671 (GCVE-0-2020-25671)

Vulnerability from cvelistv5 – Published: 2021-05-26 10:44 – Updated: 2024-08-04 15:40
VLAI
Summary
A vulnerability was found in Linux Kernel, where a refcount leak in llcp_sock_connect() causing use-after-free which might lead to privilege escalations.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Linux Kernel Affected: All
Show details on NVD website
To clipboard 

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CVE-2020-25670 (GCVE-0-2020-25670)

Vulnerability from cvelistv5 – Published: 2021-05-26 10:28 – Updated: 2024-08-04 15:40
VLAI
Summary
A vulnerability was found in Linux Kernel where refcount leak in llcp_sock_bind() causing use-after-free which might lead to privilege escalations.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Linux Kernel Affected: All
Show details on NVD website
To clipboard 

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CVE-2020-25669 (GCVE-0-2020-25669)

Vulnerability from cvelistv5 – Published: 2021-05-26 11:25 – Updated: 2024-08-04 15:40
VLAI
Summary
A vulnerability was found in the Linux Kernel where the function sunkbd_reinit having been scheduled by sunkbd_interrupt before sunkbd being freed. Though the dangling pointer is set to NULL in sunkbd_disconnect, there is still an alias in sunkbd_reinit causing Use After Free.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Linux Kernel Affected: 5.9.4
Show details on NVD website
To clipboard 

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CVE-2020-25663 (GCVE-0-2020-25663)

Vulnerability from cvelistv5 – Published: 2020-12-08 20:57 – Updated: 2024-08-04 15:40
VLAI
Summary
A call to ConformPixelInfo() in the SetImageAlphaChannel() routine of /MagickCore/channel.c caused a subsequent heap-use-after-free or heap-buffer-overflow READ when GetPixelRed() or GetPixelBlue() was called. This could occur if an attacker is able to submit a malicious image file to be processed by ImageMagick and could lead to denial of service. It likely would not lead to anything further because the memory is used as pixel data and not e.g. a function pointer. This flaw affects ImageMagick versions prior to 7.0.9-0.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a ImageMagick Affected: prior to 7.0.9-0
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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