Vulnerability · Published May 1, 2026 · Assigned by oracle

CVE-2026-35233

Medium 4.4

In plain English

A medium-severity out-of-bounds read in Oracle Linux from Oracle Corporation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.4Medium

Exploit odds (30 days)0.1%top 98.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:14	dtrace	2.0.7-1	DEBIAN-CVE-2026-35233
Ubuntu:26.04:LTS	dtrace	no fix listed	UBUNTU-CVE-2026-35233
Ubuntu:26.10	dtrace	no fix listed	UBUNTU-CVE-2026-35233

Affected products (as reported)

Vendor	Product	Versions
Oracle Corporation	Oracle Linux	8910

Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

References

Oracle Advisory vendor-advisory