Skip to main content
CVE-2026-21996VulnerabilityPublished

An unprivileged attacker can reliably trigger a crash of the dtrace process with a malicious ELF binary due to an

Source GCVE Database

0
Authoritative record:CVE-2026-21996· Low 3.3

Not known to be exploited · CVSS 3.3 Low.

Data as of 27 Oct 2026, 00:47 UTC

CVSS 3.1 base score
3.3Low
How severe the flaw is on the 0–10 CVSS scale.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Oracle CorporationOracle LinuxAffected
  • =8
  • =9
  • =10
Fixed in–

AI-suggested

Until a fix is available, restricting access to dtrace or monitoring for crash conditions may help mitigate impact.

Description

CVE-2026-21996 is a vulnerability in the dtrace process where an unprivileged attacker can cause a crash by supplying a malicious ELF binary. The root cause is an integer divide-by-zero error in the function Pbuild_file_symtab(). This leads to a denial of service condition without impacting confidentiality or integrity.

References

Community reviews

Loading reviews…