CVE-2026-49414 (GCVE-0-2026-49414)
Vulnerability from cvelistv5 – Published: 2026-06-27 09:22 – Updated: 2026-06-29 13:04
VLAI?
Title
ASLR bypass for setuid executables via procctl(2)
Summary
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.
Severity ?
7.8 (High)
CWE
- CWE-179 - Incorrect Behavior Order: Early Validation
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
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Impacted products
Credits
Synacktiv
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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