Vulnerability Report

CVE-2026-35233

Title: Denial of Service and Privilege Escalation in dtrace

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2026-35233.

CWE Category CWE-125
Published Date May 01, 2026
Modified Date May 05, 2026
Exploit Status Not Found
Score 4.4 CVSS v3.1
Exploit Probability (EPSS)
0.11%

Vulnerability Summary

CVE-2026-35233: 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.

Impacted Vendors

C
conectiva 1
S
sun 1
O
oracle 1

Reference Links

https://linux.oracle.com/cve/CVE-2026-35233.html
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
4.4
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-35233 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector LOCAL
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

Affected Stack

No specific products linked.