CVE-2026-39457 - Stack overflow via select() file descriptor set overflow

CVE-2026-39457 - Stack overflow via select() file descriptor set overflow

https://cvefeed.io/rssfeed/latest.atom / Thu, 04/30/2026 - 14:21
CVE ID :CVE-2026-39457
Published : April 30, 2026, 9:16 a.m. | 2 hours, 59 minutes ago
Description :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.
Severity: 0.0 | NA
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