CVE-2026-18313
rpcapd memory leak in libpcap before 1.10.7
- State
- Published
- Severity
- 4.3 Medium
- Published
- Sep 5, 2026
- Updated
- Sep 8, 2026
- Reserved
- Jul 29, 2026
Description
rpcapd can allocate up to 65536 bytes per each RPCAP_MSG_UPDATEFILTER_REQ or RPCAP_MSG_STARTCAP_REQ message received from the client, but it never frees the memory, so it leaks memory even under normal use. A malicious client can cause the server to leak memory substantially faster.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L | Tcpdump |
Weaknesses
- CWE-401 Missing Release of Memory after Effective Lifetime
Affected Products
| Product | Versions |
|---|---|
libpcapThe Tcpdump Group |
|
References
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