CVE-2018-6836

The netmonrec_comment_destroy function in wiretap/netmon.c in Wireshark through 2.4.4 performs a free operation on an uninitialized memory address, which allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact.

• CWE-763

• https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14397Exploit, Issue Tracking, Third Party Advisory
• https://code.wireshark.org/review/#/c/25660/Issue Tracking, Patch
• https://code.wireshark.org/review/#/c/25660/2/wiretap/netmon.cPatch
• https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=28960d79cca262ac6b974f339697b299a1e28fef
• https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14397Exploit, Issue Tracking, Third Party Advisory
• https://code.wireshark.org/review/#/c/25660/Issue Tracking, Patch
• https://code.wireshark.org/review/#/c/25660/2/wiretap/netmon.cPatch
• https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=28960d79cca262ac6b974f339697b299a1e28fef

Published

Feb 8, 2018

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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