CVE-2004-1235: Race condition in the (1) load_elf_library and (2) binfmt_aout function calls for uselib in Linux kernel 2.4 t

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MEDIUM 6.2WATCHLISTMITIGATEMITIGATEMITIGATE

CVE-2004-1235 is a medium-severity flaw (CVSS 6.2) affecting mn100, network routing, converged communications server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Race condition in the (1) load_elf_library and (2) binfmt_aout function calls for uselib in Linux kernel 2.4 through 2.429-rc2 and 2.6 through 2.6.10 allows local users to execute arbitrary code by manipulating the VMA descriptor.

Why this priority

Public exploit reference
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.2 (Medium)
EPSS exploit chance	2.9% (top 13%)
CISA exploited list	No
Published	2005-04-14
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: avaya · linux

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2005-04-14 04:00 UTCPublished CVE record published
2026-06-16 22:07 UTCUpdated Record last modified

avaya mn100 MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mn100 || rpm -q mn100 || mn100 --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

avaya network routing MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy network-routing || rpm -q network-routing || network-routing --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

avaya converged communications server MITIGATE

Affected: 2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0

Firmware

Install the latest firmware from the vendor advisory; if none, apply the vendor workaround.

avaya s8710 MITIGATE

Affected: r2.0.0 · r2.0.1

Fixed in: no fixed release known

Safe to downgrade to: a release before r2.0.0

Firmware

Install the latest firmware from the vendor advisory; if none, apply the vendor workaround.

avaya modular messaging message storage server MITIGATE

Affected: 1.1 · 2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

linux linux kernel MITIGATE

Affected: 2.4.0 · 2.4.0 test1 · 2.4.0 test10 · 2.4.0 test11 · 2.4.0 test12 · 2.4.0 test2 · 2.4.0 test3 · 2.4.0 test4

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Downgrade not recommended

This is a core system component: downgrading can break the OS. Apply the distro update or the vendor mitigation.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Linux Kernel 2.4 - 'uselib()' Local Privilege Escalation (2)
Exploit-DB: Linux Kernel 2.4.29-rc2 - 'uselib()' Local Privilege Escalation (1)
Exploit-DB: Linux Kernel 2.4.x/2.6.x - 'uselib()' Local Privilege Escalation (3)

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2004-1235?

mn100: mitigate or apply the listed mitigation; network routing: mitigate or apply the listed mitigation; converged communications server: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2004-1235 being exploited?

CVE-2004-1235 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2004-1235 affect?

CVE-2004-1235 affects mn100, network routing, converged communications server. Severity is medium (CVSS 6.2). Race condition in the (1) load_elf_library and (2) binfmt_aout function calls for uselib in Linux kernel 2.4 through 2.429-rc2 and 2.6 through 2.6.10 allows local users to execute arbitrary code by manipulating the VMA descriptor.

How urgent is CVE-2004-1235?

Priority 53/100. Public exploit reference; On your watchlist

Software pages

Linux kernel vulnerabilities

Related CVEs

CVE-2005-0003 LOW 2.1 MITIGATE MITIGATE The 64 bit ELF support in Linux kernel 2.6 before 2.6.10, on 64-bit architectures, does not properly check for

References

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