The ISO IS-IS parser in tcpdump before 4.9.2 has a buffer over-read in print-isoclns.c:isis_print_id().
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Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.
The ISO IS-IS parser in tcpdump before 4.9.2 has a buffer over-read in print-isoclns.c:isis_print_id().
September 14, 2017
May 13, 2026
Affected: Red Hat Enterprise Linux 7.
https://access.redhat.com/errata/RHEA-2018:0705| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | tcpdump (4.9.2-0ubuntu0.12.04.1) @ precise | 2026-05-20 | ubuntu |
| ubuntu | tcpdump (4.9.2-0ubuntu0.17.04.2) @ zesty | 2026-05-20 | ubuntu |
| redhat | tcpdump-14:4.9.2-3.el7 | 2018-04-10 | redhat |
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