# CVE-2026-35233: An unprivileged attacker can craft a user-space process with a malicious ELF binary containing an out-of-range sh_link…

Source: https://junglewise.ai/threats/cve-2026-35233-an-unprivileged-attacker-can-craft-a-user-space-process-with-a  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-01  
License: CC BY 4.0 with a link back

CVE-2026-35233 · Severity: medium · CVSS 4.4 · Published 2026-05-01

An unprivileged attacker can craft a user-space process with a malicious ELF binary containing an out-of-range sh_link field. When root-level dtrace attaches to -- or instruments -- that process (via dtrace -p , pid probes, or USDT), the ELF parser reads heap memory beyond the allocated section cache array without any bounds check. This results in an uninitialized/out-of-bounds heap read that can cause a NULL pointer dereference crash of the dtrace process (DoS), or -- depending on heap layout -- a read-then-use of a garbage pointer controlled by adjacent allocations, providing a foothold toward further exploitation in a privileged context.

Technologies: [Oracle Linux](https://junglewise.ai/threats/technologies/oracle-linux). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-35233 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-35233 being exploited in the wild.

**How severe is CVE-2026-35233?** Medium severity, with a CVSS score of 4.4, published 1 May 2026.

**Which products and versions are affected?** Oracle Linux. The advisory does not name versions.

**Is there a fix for CVE-2026-35233?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-35233?** Check whether you run Oracle Linux. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Oracle Linux

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