CVE-2003-0985

The mremap system call (do_mremap) in Linux kernel 2.4.x before 2.4.21, and possibly other...

7.2 HighPublic exploitFix available

The mremap system call (do_mremap) in Linux kernel 2.4.x before 2.4.21, and possibly other versions before 2.4.24, does not properly perform bounds checks, which allows local users to cause a denial of service and possibly gain privileges by causing a remapping of a virtual memory area (VMA) to create a zero length VMA, a different vulnerability than CAN-2004-0077.

Exploit likelihood

1.23%Down 2.8 points since Feb 4, 2022

What each source reports

NVD Score used 7.2

Record: CVE-2003-0985
CVSS 2.0: 7.2 HighAV:L/AC:L/Au:N/C:C/I:C/A:C
Updated: 2026-11-02

CVE List No score

Record: CVE-2003-0985
Updated: 2026-11-02

EUVDEUVD-2003-0975 No score

Record: EUVD-2003-0975
Updated: 2026-11-03

GitHub AdvisoriesGHSA-p4qr-c64v-fjhc No score

The mremap system call (do_mremap) in Linux kernel 2.4.x before 2.4.21, and possibly other...

Record: GHSA-p4qr-c64v-fjhc
Updated: 2026-11-02

Affected products

linux kernel

Affected packages

Affected packages
Package	Affected	Fixed
`kernel-source-2.4.18` Debian:3.0	before 2.4.18-14.1	2.4.18-14.1
`kernel-image-2.4.18-1-i386` Debian:3.0	before 2.4.18-12.1	2.4.18-12.1
`kernel-patch-2.4.18-powerpc` Debian:3.0 From an advisory covering 2 CVEs	before 2.4.18-1woody3	2.4.18-1woody3
`kernel-image-2.4.18-1-alpha` Debian:3.0 From an advisory covering 2 CVEs	before 2.4.18-12	2.4.18-12
`kernel-image-2.4.17-ia64` Debian:3.0 From an advisory covering 12 CVEs	before kernel-image-2.4.17-ia64	kernel-image-2.4.17-ia64
`kernel-patch-2.4.17-mips` Debian:3.0	before 2.4.17-0.020226.2.woody3	2.4.17-0.020226.2.woody3
`kernel-image-2.4.16-lart` Debian:3.0 From an advisory covering 3 CVEs	before 2.4.16-20040204	2.4.16-20040204
`kernel-image-2.4.16-netwinder` Debian:3.0 From an advisory covering 3 CVEs	before 2.4.16-20040204	2.4.16-20040204
`kernel-image-2.4.16-riscpc` Debian:3.0 From an advisory covering 3 CVEs	before 2.4.16-20040204	2.4.16-20040204
`kernel-patch-2.4.16-arm` Debian:3.0 From an advisory covering 3 CVEs	before 20040204	20040204

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Affected packages
Package	Affected	Fixed
`kernel-source-2.4.17` Debian:3.0 From an advisory covering 3 CVEs	before 2.4.17-4, plus listed versions 2.4.17-1woody32.4.17-1woody4	2.4.17-4
`kernel-patch-2.4.17-apus` Debian:3.0 From an advisory covering 3 CVEs	before 2.4.17-4	2.4.17-4
`kernel-patch-2.4.17-s390` Debian:3.0 From an advisory covering 10 CVEs	before 0.0.20020816-0.woody.2	0.0.20020816-0.woody.2
`kernel-image-2.4.17-s390` Debian:3.0 From an advisory covering 10 CVEs	before 2.4.17-2.woody.3	2.4.17-2.woody.3
`kernel-source-2.4.19` Debian:3.0 From an advisory covering 3 CVEs	before 2.4.19-0.020911.1.woody3	2.4.19-0.020911.1.woody3
`kernel-patch-2.4.19-mips` Debian:3.0 From an advisory covering 3 CVEs	before 2.4.19-4.woody1, plus listed versions 2.4.19-0.020911.1.woody42.4.19-0.020911.1.woody5	2.4.19-4.woody1
`kernel-image-2.4.17-hppa` Debian:3.0 From an advisory covering 3 CVEs	before 32.3	32.3
`kernel-image-2.4.18-hppa` Debian:3.0 From an advisory covering 3 CVEs	before 62.1	62.1
`kernel` Red Hat:enterprise_linux:3::as	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-BOOT` Red Hat:enterprise_linux:3::as	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-debuginfo` Red Hat:enterprise_linux:3::as	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-doc` Red Hat:enterprise_linux:3::as	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-hugemem` Red Hat:enterprise_linux:3::as	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-hugemem-unsupported` Red Hat:enterprise_linux:3::as	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-smp` Red Hat:enterprise_linux:3::as	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-smp-unsupported` Red Hat:enterprise_linux:3::as	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-source` Red Hat:enterprise_linux:3::as	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-unsupported` Red Hat:enterprise_linux:3::as	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel` Red Hat:enterprise_linux:3::desktop	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-BOOT` Red Hat:enterprise_linux:3::desktop	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-debuginfo` Red Hat:enterprise_linux:3::desktop	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-doc` Red Hat:enterprise_linux:3::desktop	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-hugemem` Red Hat:enterprise_linux:3::desktop	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-hugemem-unsupported` Red Hat:enterprise_linux:3::desktop	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-smp` Red Hat:enterprise_linux:3::desktop	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-smp-unsupported` Red Hat:enterprise_linux:3::desktop	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-source` Red Hat:enterprise_linux:3::desktop	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-unsupported` Red Hat:enterprise_linux:3::desktop	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel` Red Hat:enterprise_linux:3::es	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-BOOT` Red Hat:enterprise_linux:3::es	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-debuginfo` Red Hat:enterprise_linux:3::es	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-doc` Red Hat:enterprise_linux:3::es	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-hugemem` Red Hat:enterprise_linux:3::es	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-hugemem-unsupported` Red Hat:enterprise_linux:3::es	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-smp` Red Hat:enterprise_linux:3::es	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-smp-unsupported` Red Hat:enterprise_linux:3::es	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-source` Red Hat:enterprise_linux:3::es	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-unsupported` Red Hat:enterprise_linux:3::es	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel` Red Hat:enterprise_linux:3::ws	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-BOOT` Red Hat:enterprise_linux:3::ws	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-debuginfo` Red Hat:enterprise_linux:3::ws	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-doc` Red Hat:enterprise_linux:3::ws	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-hugemem` Red Hat:enterprise_linux:3::ws	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-hugemem-unsupported` Red Hat:enterprise_linux:3::ws	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-smp` Red Hat:enterprise_linux:3::ws	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-smp-unsupported` Red Hat:enterprise_linux:3::ws	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-source` Red Hat:enterprise_linux:3::ws	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL
`kernel-unsupported` Red Hat:enterprise_linux:3::ws	before 0:2.4.21-4.0.2.EL	0:2.4.21-4.0.2.EL

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Linux Kernel 2.4.23/2.6.0 - 'do_mremap()' Bound Checking Validator (1)	2004-01-06
Exploit-DB	Linux Kernel 2.4.23/2.6.0 - 'do_mremap()' Bound Checking Validator (2)	2004-01-07
Exploit-DB	Linux Kernel 2.4.23/2.6.0 - 'do_mremap()' Bound Checking Privilege Escalation	2004-01-15

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2003-0985 is a high vulnerability (CVSS 7.2) in Linux Kernel, published January 6, 2004. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 1.23%, the 69th percentile. Fixed in kernel-source-2.4.18 2.4.18-14.1.

References

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