CVE-2026-39457

תיאור (מקור, אנגלית)

When exchanging data over a socket, libnv uses select(2) to wait for data to arrive. However, it does not verify whether the provided socket descriptor fits in select(2)'s file descriptor set size limit of FD_SETSIZE (1024). An attacker who is able to force a libnv application to allocate large file descriptors, e.g., by opening many descriptors and executing a program which is not careful to close them upon startup, can trigger stack corruption. If the target application is setuid-root, then this could be used to elevate local privileges.

מדדים

CVSS 3.1

7.8 (HIGH) מקור הציון: CNA CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — סבירות ניצול

0% (אחוזון 000) נכון ל-27/9/2026

CWE

CWE-121

מוצרים מושפעים

freebsd: freebsd

קישורים

• https://security.freebsd.org/advisories/FreeBSD-SA-26:16.libnv.asc Vendor Advisory