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Vulnerabilities

Vulnerability · CVE-2026-21996

An unprivileged attacker can reliably trigger a crash of the dtrace process with a malicious ELF binary due to an integer Divide-by-Zero in Pbuild_file_symtab()

Published May 1, 2026 · catalog updated Jun 17, 2026 · An unprivileged attacker can

Check if you run it

No confirmed exploitation is on record for CVE-2026-21996. EPSS is 0.11%. Act only if a listed version of An unprivileged attacker can is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (An unprivileged attacker can).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.11%
Remediation
Advisory link
Affected products
cpe oracle/linux

An unprivileged attacker can reliably trigger a crash of the dtrace process with a malicious ELF binary due to an integer Divide-by-Zero in Pbuild_file_symtab()

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe oracle/linux10
  • cpe oracle/linux8
  • cpe oracle/linux9

How to fix CVE-2026-21996

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-21996. EPSS is 0.11%. Act only if a listed version of An unprivileged attacker can is installed.

Which versions are affected?

Compare what you have installed with 10, 8, 9. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-369. EPSS 0.11%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 1, 2026 · NIST NVD

    Detected

    An unprivileged attacker can reliably trigger a crash of the dtrace process with a malicious ELF binary due to an integer Divide-by-Zero in Pbuild_file_symtab()

  2. Jun 17, 2026 · NIST NVD

    Updated

    An unprivileged attacker can reliably trigger a crash of the dtrace process with a malicious ELF binary due to an integer Divide-by-Zero in Pbuild_file_symtab()

Sources

  • CVE.orgVulnerability recordCVE-2026-21996

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-21996

    30-day exploitation probability 0.1%

    first.org
  • NIST NVDVulnerability recordCVE-2026-21996

    An unprivileged attacker can reliably trigger a crash of the dtrace process with a malicious ELF binary due to an integer Divide-by-Zero in Pbuild_file_symtab()

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.