CVE-2026-49414CWE-179

ASLR bypass for setuid executables via procctl(2)

High · published June 27, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
4.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00153 · 4.8th percentile
Weakness
CWE-179 · Incorrect Behavior Order: Early Validation
Published
2026-06-27T09:22Z
EPSS history
Timeline
  • 27 JUN 09:22Z
    ASLR bypass for setuid executables via procctl(2)
    cvelistv5