Wireshark 4.6.x Memory Leak (sharkd) DoS
CVE-2026-7379 Published on April 30, 2026
Missing Release of Memory after Effective Lifetime in Wireshark
Memory leak in sharkd 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
Vulnerability Analysis
CVE-2026-7379 can be exploited with local system access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Memory Leak Vulnerability?
The software does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is often triggered by improper handling of malformed data or unexpectedly interrupted sessions. In some languages, developers are responsible for tracking memory allocation and releasing the memory. If there are no more pointers or references to the memory, then it can no longer be tracked and identified for release.
CVE-2026-7379 has been classified to as a Memory Leak vulnerability or weakness.
Products Associated with CVE-2026-7379
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Affected Versions
Wireshark Foundation Wireshark:- Version 4.6.0 and below 4.6.5 is affected.
- Version 4.4.0 and below 4.4.15 is affected.