How severe is CVE-2004-2731?

CVE-2004-2731 has a CVSS 2.0 base score of 4.4, rated medium severity.

Is CVE-2004-2731 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-2731?

CVE-2004-2731 primarily affects Linux Linux Kernel. In total, 102 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2004-2731?

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

When was CVE-2004-2731 published?

CVE-2004-2731 was published on 2004-12-31 and last updated on 2026-06-16.

CVE-2004-2731

CVE-2004-2731 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 4.4. 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-189.

Key facts

Severity: Medium (CVSS 2.0 base score 4.4)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-189
Affected product: Linux Linux Kernel
Published: 2004-12-31
Last modified: 2026-06-16

Description

Multiple integer overflows in Sbus PROM driver (drivers/sbus/char/openprom.c) for the Linux kernel 2.4.x up to 2.4.27, 2.6.x up to 2.6.7, and possibly later versions, allow local users to execute arbitrary code by specifying (1) a small buffer size to the copyin_string function or (2) a negative buffer size to the copyin function.

Frequently asked questions

What is CVE-2004-2731?: Multiple integer overflows in Sbus PROM driver (drivers/sbus/char/openprom.c) for the Linux kernel 2.4.x up to 2.4.27, 2.6.x up to 2.6.7, and possibly later versions, allow local users to execute arbitrary code by specifying (1) a small buffer size to the copyin_string function or (2) a negative buffer size to the copyin function.
How severe is CVE-2004-2731?: CVE-2004-2731 has a CVSS 2.0 base score of 4.4, rated medium severity.
Is CVE-2004-2731 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-2731?: CVE-2004-2731 primarily affects Linux Linux Kernel. In total, 102 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-2731?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2004-2731 published?: CVE-2004-2731 was published on 2004-12-31 and last updated on 2026-06-16.

References

Affected products (102)

cpe:2.3:o:linux:linux_kernel:2.4.0:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.0:test1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.0:test10:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.0:test11:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.0:test12:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.0:test2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.0:test3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.0:test4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.0:test5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.0:test6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.0:test7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.0:test8:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.0:test9:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.3:pre3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.5:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.6:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.7:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.8:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.9:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.9_pre5:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.10:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.11:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.11:pre3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.12:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.13:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.14:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.15:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.16:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.17:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.18:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.18:pre1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.18:pre2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.18:pre3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.18:pre4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.18:pre5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.4.18:pre6:*:*:*:*:*:*

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