CVE-2026-39457
HIGH
MEDIUM
Priority: 0.01
BB Relevance:
41/100
Published: 2026-04-30
Modified: 2026-11-11
First seen: 2026-11-11
Status: active
Attack Surface
Low Complexity
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
High
I:
High
A:
High
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.
Weakness Classification (1)
Affected Software (37)
| Vendor | Product | Version |
|---|---|---|
| freebsd | freebsd | 13.5 |
| freebsd | freebsd | 13.5 |
| freebsd | freebsd | 13.5 |
| freebsd | freebsd | 13.5 |
| freebsd | freebsd | 13.5 |
| freebsd | freebsd | 13.5 |
| freebsd | freebsd | 13.5 |
| freebsd | freebsd | 13.5 |
| freebsd | freebsd | 13.5 |
| freebsd | freebsd | 13.5 |
| freebsd | freebsd | 13.5 |
| freebsd | freebsd | 13.5 |
| freebsd | freebsd | 13.5 |
| freebsd | freebsd | 13.5 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4 |
Showing 30 of 37 entries
References & Advisories (1)
Vendor Advisory