CVE-2026-49414

High

Description

The ELF image activator cleared per-process ASLR preference flags for setuid binaries after the code that computes the PIE base address, rather than before. As a result, a user-requested ASLR disable was still in effect at the point where the base address was chosen. An unprivileged local user can disable ASLR for a setuid PIE binary by calling procctl(2) before execve(2). This makes exploitation of any separate memory corruption vulnerability in that binary significantly easier.

SeverityHigh

CVSS7.8

Exploit probability—

Product

Freebsd

PublishedJun 27, 2026

First seenJun 27, 2026

Weakness typeCWE-179CWE-179

How to fix

Vendor advisories

security.freebsd.org/advisories/FreeBSD-SA-26:32.elf.asc

Affected products

Product	Affected versions	Fixed in
freebsd freebsd	14.3, 14.4, 15.0	—

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