{"cve":"CVE-2023-7256","nvd":{"published":"2024-08-31T00:15:05.240","modified":"2026-06-17T06:52:25.317","status":"Analyzed","description":"In affected libpcap versions during the setup of a remote packet capture the internal function sock_initaddress() calls getaddrinfo() and possibly freeaddrinfo(), but does not clearly indicate to the caller function whether freeaddrinfo() still remains to be called after the function returns.  This makes it possible in some scenarios that both the function and its caller call freeaddrinfo() for the same allocated memory block.  A similar problem was reported in Apple libpcap, to which Apple assigned CVE-2023-40400.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","score":4.4},"cwes":["CWE-415"],"references":["https://github.com/the-tcpdump-group/libpcap/commit/262e4f34979872d822ccedf9f318ed89c4d31c03","https://github.com/the-tcpdump-group/libpcap/commit/2aa69b04d8173b18a0e3492e0c8f2f7fabdf642d"],"products":["tcpdump:libpcap"],"source":"nvd","synced_at":"2026-10-19T21:54:16.205165117+00:00"},"epss":{"cve":"CVE-2023-7256","score":0.00244,"percentile":0.15624,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}