CVE-2003-0619

Linux Kernel < 2.4.21 - Denial of Service via NFSv3 XDR Data Size Integer Signedness Error

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2003-0619. PoCs published by Jared Stanbrough.

AI-analyzed exploit summary This exploit targets a signed/unsigned integer vulnerability in the Linux 2.4.20 kernel's knfsd `decode_fh` function, leading to a denial-of-service (DoS) condition. It crafts a malicious NFS diropargs XDR argument with a negative size value to trigger the vulnerability.

Description

Integer signedness error in the decode_fh function of nfs3xdr.c in Linux kernel before 2.4.21 allows remote attackers to cause a denial of service (kernel panic) via a negative size value within XDR data of an NFSv3 procedure call.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Jared Stanbrough · cdoslinux
https://www.exploit-db.com/exploits/68

This exploit targets a signed/unsigned integer vulnerability in the Linux 2.4.20 kernel's knfsd `decode_fh` function, leading to a denial-of-service (DoS) condition. It crafts a malicious NFS diropargs XDR argument with a negative size value to trigger the vulnerability.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Linux kernel 2.4.20 with knfsd
No auth needed
Prerequisites: Access to an exported NFS directory on the vulnerable host
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5
Core References
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=105950927708272&w=2
Vendor Advisory vendor-advisory x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2003-198.html
Vendor Advisory vendor-advisory x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2003-239.html
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2004/dsa-358
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A386

Scores

EPSS 0.1088
EPSS Percentile 95.3%

Details

Status published
Products (1)
linux/linux_kernel < 2.4.21
Published Aug 27, 2003
Tracked Since Feb 18, 2026