Medium 5.3Published Oct 3, 2019

CVE-2019-15165sf-pcapng.c in libpcap before 1.9.1 does not properly validate the PHB header length before allocating memory.

Updated under an hour ago (Nov 2, 2026, 12:23 AM ET)

Does this affect you?

It affects tcpdump libpcap and 10 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stackFree account, 3 products Every CVE for tcpdump libpcap Exploited in the last 30 days

sf-pcapng.c in libpcap before 1.9.1 does not properly validate the PHB header length before allocating memory.

CVSS: 5.3 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness (CWE): CWE-770
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

tcpdump libpcap tcpdump:libpcap	before 1.9.1	NVD
debian debian_linux debian:debian_linux	8.0; 9.0	NVD
opensuse leap opensuse:leap	15.0; 15.1	NVD
oracle communications_operations_monitor oracle:communications_operations_monitor	3.4; 4.0; 4.1; 4.2; 4.3	NVD
apple ipados apple:ipados	13.3	NVD
apple iphone_os apple:iphone_os	13.3	NVD
apple mac_os_x apple:mac_os_x	from 10.13 before 10.13.6; 10.13.6; 10.14.6; 10.15.2	NVD
apple tvos apple:tvos	13.3	NVD
apple watchos apple:watchos	6.1.1	NVD
canonical ubuntu_linux canonical:ubuntu_linux	12.04; 14.04; 16.04; 18.04; 19.04	NVD
1–10 of 11

References

References

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00051.html	mailing-list, third-party-advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00052.html	mailing-list, third-party-advisory
http://seclists.org/fulldisclosure/2019/Dec/26	issue-tracking, mailing-list, third-party-advisory
https://github.com/the-tcpdump-group/libpcap/blob/libpcap-1.9/CHANGES	product, release-notes
https://github.com/the-tcpdump-group/libpcap/commit/87d6bef033062f969e70fa40c43dfd945d5a20ab	patch, third-party-advisory
https://github.com/the-tcpdump-group/libpcap/commit/a5a36d9e82dde7265e38fe1f87b7f11c461c29f6	patch, third-party-advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00031.html	mailing-list, third-party-advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00014.html	mailing-list, third-party-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5P5K3DQ4TFSZBDB3XN4CZNJNQ3UIF3D3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GBIEKWLNIR62KZ5GA7EDXZS52HU6OE5F/
1–10 of 20

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.