Read the docs
TI-2004-00443 Aliases CVE-2004-0491GHSA-f79w-jc47-24f4

The linux-2.4.21-mlock.patch in Red Hat Enterprise Linux 3 does not properly maintain the…

Priority LOW 11Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Partial · None
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.

Summary

The linux-2.4.21-mlock.patch in Red Hat Enterprise Linux 3 does not properly maintain the mlock page count when one process unlocks pages that belong to another process, which allows local users to mlock more memory than specified by the rlimit.

Why it matters now

EPSS 0.0036 29th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux:3.0:*:*:*:*:*:*:*3.0VulnerableRed Hat
  • cpe:2.3:o:redhat:enterprise_linux:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Red Hat

Remediation

Red Hat 1 advisory

  • RHSA-2005:472 Released 2005-05-25 · Red Hat rating Important
    kernel security update
    • Red Hat Desktop version 3 kernel-2.4.21-32.0.1.EL, kernel-2.4.21-32.0.1.EL.athlon, kernel-2.4.21-32.0.1.EL.ia32e +14
    • Red Hat Enterprise Linux AS version 3 kernel-2.4.21-32.0.1.EL, kernel-2.4.21-32.0.1.EL.athlon, kernel-2.4.21-32.0.1.EL.ia32e +22
    • Red Hat Enterprise Linux ES version 3 kernel-2.4.21-32.0.1.EL, kernel-2.4.21-32.0.1.EL.athlon, kernel-2.4.21-32.0.1.EL.ia32e +18
    • Red Hat Enterprise Linux WS version 3 kernel-2.4.21-32.0.1.EL, kernel-2.4.21-32.0.1.EL.athlon, kernel-2.4.21-32.0.1.EL.ia32e +18

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Desktop version 3Fixed RHSA-2005:472
Red Hat Enterprise Linux AS version 3Fixed RHSA-2005:472
Red Hat Enterprise Linux ES version 3Fixed RHSA-2005:472
Red Hat Enterprise Linux WS version 3Fixed RHSA-2005:472

Timeline

  1. 2026-10-02 Threatist record created from CVE-2004-0491
  2. 2026-10-03 Alias added: GHSA-f79w-jc47-24f4

References

Advisory 1

Other 4

  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-10530 Code injection in [UNKNOWN] RichFaces KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05157 GNU Bash through 4.3 processes trailing strings after function definitions in the values… KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-23530 Sudo before 1.9.17p1 allows local users to obtain root access because /etc/nsswitch.conf… KEVCVSS 3.1CRITICAL 9.3
  • TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
See all 1955 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences