Weakness (CWE)
CWE-763: Release of Invalid Pointer or Reference
The product attempts to return a memory resource to the system, but it calls the wrong release function or calls the appropriate release function incorrectly.
How to prevent it (4 mitigations)
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Implementation
Only call matching memory management functions. Do not mix and match routines. For example, when you allocate a buffer with malloc(), dispose of the original pointer with free().
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Implementation
When programming in C++, consider using smart pointers provided by the boost library to help correctly and consistently manage memory.
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Architecture and Design
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
For example, glibc in Linux provides protection against free of invalid pointers.
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Architecture and Design
Use a language that provides abstractions for memory allocation and deallocation.
Source: MITRE CWE-763
4 results · Clear filters · Feed
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Medium 4.3CVE-2026-15718 Public exploit
Invalid pointer in the JavaScript: WebAssembly component
We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 140.13, and Thunderbird 140.13.
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Critical 9.8CVE-2026-52993 Public exploit
tipc: fix double-free in tipc_buf_append()
In the Linux kernel, the following vulnerability has been resolved: tipc: fix double-free in tipc_buf_append() tipc_msg_validate() can potentially reallocate the skb it is validating, freeing the old one. In tipc_buf_append(), it was being called with a point…
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High 7.8CVE-2023-34312 Public exploit
In Tencent QQ through 9.7.8.29039 and TIM through 3.4.7.22084, QQProtect.exe and QQProtectEngine.dll do not validate po…
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High 7.1CVE-2021-21401 Public exploit
Invalid free() call in Nanopb
Nanopb is a small code-size Protocol Buffers implementation in ansi C. In Nanopb before versions 0.3.9.8 and 0.4.5, decoding a specifically formed message can cause invalid `free()` or `realloc()` calls if the message type contains an `oneof` field, and the `…