How severe is CVE-2004-0427?

CVE-2004-0427 has a CVSS 2.0 base score of 2.1, rated low severity.

Is CVE-2004-0427 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-0427?

CVE-2004-0427 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2004-0427?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2004-0427 published?

CVE-2004-0427 was published on 2004-07-07 and last updated on 2026-06-16.

CVE-2004-0427

CVE-2004-0427 is a low-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 2.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-401.

Key facts

Severity: Low (CVSS 2.0 base score 2.1)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-401
Affected product: Linux Linux Kernel
Published: 2004-07-07
Last modified: 2026-06-16

Description

The do_fork function in Linux 2.4.x before 2.4.26, and 2.6.x before 2.6.6, does not properly decrement the mm_count counter when an error occurs after the mm_struct for a child process has been activated, which triggers a memory leak that allows local users to cause a denial of service (memory exhaustion) via the clone (CLONE_VM) system call.

Frequently asked questions

What is CVE-2004-0427?: The do_fork function in Linux 2.4.x before 2.4.26, and 2.6.x before 2.6.6, does not properly decrement the mm_count counter when an error occurs after the mm_struct for a child process has been activated, which triggers a memory leak that allows local users to cause a denial of service (memory exhaustion) via the clone (CLONE_VM) system call.
How severe is CVE-2004-0427?: CVE-2004-0427 has a CVSS 2.0 base score of 2.1, rated low severity.
Is CVE-2004-0427 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-0427?: CVE-2004-0427 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2004-0427?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2004-0427 published?: CVE-2004-0427 was published on 2004-07-07 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

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