Weakness (CWE)
CWE-415: Double Free
The product calls free() twice on the same memory address.
How to prevent it (3 mitigations)
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Architecture and Design
Choose a language that provides automatic memory management.
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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.
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Implementation
Use a static analysis tool to find double free instances.
Source: MITRE CWE-415
9 results · Clear filters · Feed
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High 8.1CVE-2026-94300 Public exploit
Concurrent GSS-TSIG messages corrupt memory
Replaying GSS-TSIG signed UDP messages can result in memory corruption in "`named`". An attacker who can capture a previously signed UDP message can replay it while the negotiated TSIG key is still valid. By also sending crafted queries to a zone the attacker…
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High 7.8CVE-2026-43494 Public exploit
net/rds: reset op_nents when zerocopy page pin fails
In the Linux kernel, the following vulnerability has been resolved: net/rds: reset op_nents when zerocopy page pin fails When iov_iter_get_pages2() fails in rds_message_zcopy_from_user(), the pinned pages are released with put_page(), and rm->data.op_mmp_znot…
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High 8.8
Apache HTTP Server: http2: double free and possible RCE on early reset
Double Free and possible RCE vulnerability in Apache HTTP Server with the HTTP/2 protocol. This issue affects Apache HTTP Server: 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue.
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High 7.8CVE-2026-26179 Public exploit
Windows Kernel Elevation of Privilege Vulnerability
Double free in Windows Kernel allows an authorized attacker to elevate privileges locally.
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High 7.0
Windows Kernel Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Kernel allows an authorized attacker to elevate privileges locally.
KEV Nov 12, 2025 -
High 7.8CVE-2023-33137 Public exploit
Microsoft Excel Remote Code Execution Vulnerability
Microsoft Excel Remote Code Execution Vulnerability
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High 7.5CVE-2019-5797 Public exploit
Double free in DOMStorage in Google Chrome prior to 73.0.3683.75 allowed a remote attacker to potentially exploit heap …
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High 8.8CVE-2021-3492 Public exploit
Ubuntu linux kernel shiftfs file system double free vulnerability
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 u…
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High 8.8
android-gif-drawable Double Free vulnerability
A double free vulnerability in the DDGifSlurp function in decoding.c in the android-gif-drawable library before version 1.2.18, as used in WhatsApp for Android before version 2.19.244 and many other Android applications, allows remote attackers to execute arb…
