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.
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Mon, 29 Jun 2026 14:30:00 +0000
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cvssV3_1
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Sat, 27 Jun 2026 14:30:00 +0000
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| First Time appeared |
Freebsd
Freebsd freebsd |
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| Vendors & Products |
Freebsd
Freebsd freebsd |
Sat, 27 Jun 2026 10:00:00 +0000
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| 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. | |
| Title | ASLR bypass for setuid executables via procctl(2) | |
| Weaknesses | CWE-179 | |
| References |
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Status: PUBLISHED
Assigner: freebsd
Published:
Updated: 2026-06-29T13:04:45.409Z
Reserved: 2026-05-29T20:24:28.615Z
Link: CVE-2026-49414
Updated: 2026-06-29T13:04:37.057Z
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OpenCVE Enrichment
Updated: 2026-06-29T15:30:05Z