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CVE-2001-1559

MEDIUMCVSS 5.5/10EPSS 1.48%

Last modified

CVE-2001-1559 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. The uipc system calls (uipc_syscalls.c) in OpenBSD 2.9 and 3.0 provide user mode return instead of versus rval kernel mode values to the fdrelease function, which allows local users to cause a denial of service and trigger a null dereference.. EPSS estimates a 1.48% chance of exploitation in the next 30 days.

Description

The uipc system calls (uipc_syscalls.c) in OpenBSD 2.9 and 3.0 provide user mode return instead of versus rval kernel mode values to the fdrelease function, which allows local users to cause a denial of service and trigger a null dereference.

Metrics

CVSS 3.1
5.5/10

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

EPSS Probability
1.48%

70.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
OpenbsdOpenbsd2.9
OpenbsdOpenbsd3.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2001-1559?
The uipc system calls (uipc_syscalls.c) in OpenBSD 2.9 and 3.0 provide user mode return instead of versus rval kernel mode values to the fdrelease function, which allows local users to cause a denial of service and trigger a null dereference.
How severe is CVE-2001-1559?
CVE-2001-1559 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.48% probability of exploitation in the next 30 days.
How do I fix CVE-2001-1559?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST