CVE-2026-35233

CVE Details

Release Date:	2026-04-28
Impact:	Moderate	What is this?

Description

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. Credit: Vishal Panchani

See more information about CVE-2026-35233 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	4.4
Vector String:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Version:	3.1
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	None
Integrity Impact:	Low
Availability Impact:	Low

Errata information

Platform	Errata	Release Date
Oracle Linux version 10 (dtrace)	ELSA-2026-50249	2026-04-30
Oracle Linux version 8 (dtrace)	ELSA-2026-50250	2026-04-30
Oracle Linux version 8 (dtrace)	ELSA-2026-50251	2026-04-30
Oracle Linux version 9 (dtrace)	ELSA-2026-50249	2026-04-30
Oracle Linux version 9 (dtrace)	ELSA-2026-50250	2026-04-30