Is CVE-2009-3547 in the CISA KEV catalog?

No. CVE-2009-3547 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-3547?

CVE-2009-3547 has a CVSS v3 base score of 7.0 (HIGH).

What is the EPSS score for CVE-2009-3547?

CVE-2009-3547 has an EPSS score of 4.93% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2009-3547?

No published fix for CVE-2009-3547 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2009-3547

HIGHEPSS 91th pctl

7.0

CVSS v3

NVD

Description

Multiple race conditions in fs/pipe.c in the Linux kernel before 2.6.32-rc6 allow local users to cause a denial of service (NULL pointer dereference and system crash) or gain privileges by attempting to open an anonymous pipe via a /proc/*/fd/ pathname.

CWE-362Race Condition CWE-476NULL Pointer Dereference CWE-672

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

4.93%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.