7.8

CVE-2026-49414

ASLR bypass for setuid executables via procctl(2)

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Freebsd ≫ Freebsd Version14.3 Update-
Freebsd ≫ Freebsd Version14.3 Updatep1
Freebsd ≫ Freebsd Version14.3 Updatep10
Freebsd ≫ Freebsd Version14.3 Updatep11
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Freebsd ≫ Freebsd Version14.3 Updatep14
Freebsd ≫ Freebsd Version14.3 Updatep2
Freebsd ≫ Freebsd Version14.3 Updatep3
Freebsd ≫ Freebsd Version14.3 Updatep4
Freebsd ≫ Freebsd Version14.3 Updatep5
Freebsd ≫ Freebsd Version14.3 Updatep6
Freebsd ≫ Freebsd Version14.3 Updatep7
Freebsd ≫ Freebsd Version14.3 Updatep8
Freebsd ≫ Freebsd Version14.3 Updatep9
Freebsd ≫ Freebsd Version14.4 Update-
Freebsd ≫ Freebsd Version14.4 Updatep1
Freebsd ≫ Freebsd Version14.4 Updatep2
Freebsd ≫ Freebsd Version14.4 Updatep3
Freebsd ≫ Freebsd Version14.4 Updatep4
Freebsd ≫ Freebsd Version14.4 Updatep5
Freebsd ≫ Freebsd Version15.0 Update-
Freebsd ≫ Freebsd Version15.0 Updatep1
Freebsd ≫ Freebsd Version15.0 Updatep2
Freebsd ≫ Freebsd Version15.0 Updatep3
Freebsd ≫ Freebsd Version15.0 Updatep4
Freebsd ≫ Freebsd Version15.0 Updatep5
Freebsd ≫ Freebsd Version15.0 Updatep6
Freebsd ≫ Freebsd Version15.0 Updatep7
Freebsd ≫ Freebsd Version15.0 Updatep8
Freebsd ≫ Freebsd Version15.0 Updatep9
VulnDex Vulnerability Enrichment
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.11% 0.013
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
134c704f-9b21-4f2e-91b3-4a467353bcc0 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-179 Incorrect Behavior Order: Early Validation

The product validates input before applying protection mechanisms that modify the input, which could allow an attacker to bypass the validation via dangerous inputs that only arise after the modification.

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