The rw_vm function in usercopy.c in the 4GB split patch for the Linux kernel in Red Hat…
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 · None · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
The rw_vm function in usercopy.c in the 4GB split patch for the Linux kernel in Red Hat Enterprise Linux 4 does not perform proper bounds checking, which allows local users to cause a denial of service (crash).
Why it matters now
EPSS 0.00394 33rd 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:redhat:enterprise_linux:4.0:*:advanced_server:*:*:*:*:* | 4.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:4.0:*:enterprise_server:*:*:*:*:* | 4.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:4.0:*:workstation:*:*:*:*:* | 4.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_desktop:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | Red Hat |
- cpe:2.3:o:redhat:enterprise_linux:4.0:*:advanced_server:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:4.0:*:enterprise_server:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:4.0:*:workstation:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_desktop:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
Remediation
Red Hat 1 advisory
- RHSA-2005:514 Released 2005-10-05 · Red Hat rating ImportantUpdated kernel packages available for Red Hat Enterprise Linux 4 Update 2
- Red Hat Enterprise Linux AS version 4 kernel-2.6.9-22.EL, kernel-2.6.9-22.EL.ia64, kernel-2.6.9-22.EL.ppc64iseries +8
- Red Hat Enterprise Linux Desktop version 4 kernel-2.6.9-22.EL, kernel-devel-2.6.9-22.EL, kernel-doc-2.6.9-22.EL +4
- Red Hat Enterprise Linux ES version 4 kernel-2.6.9-22.EL, kernel-2.6.9-22.EL.ia64, kernel-devel-2.6.9-22.EL +6
- Red Hat Enterprise Linux WS version 4 kernel-2.6.9-22.EL, kernel-2.6.9-22.EL.ia64, kernel-devel-2.6.9-22.EL +6
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AS version 4 | Fixed | RHSA-2005:514 |
| Red Hat Enterprise Linux Desktop version 4 | Fixed | RHSA-2005:514 |
| Red Hat Enterprise Linux ES version 4 | Fixed | RHSA-2005:514 |
| Red Hat Enterprise Linux WS version 4 | Fixed | RHSA-2005:514 |
Timeline
- 2026-10-02 Threatist record created from CVE-2005-2100
- 2026-10-03 Alias added: GHSA-474g-rpfh-xcf7
References
More Red Hat Enterprise Linux vulnerabilities
- 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
Sources
- CVE-2005-2100 · CVE Program
- CVE-2005-2100 · NVD
- FIRST EPSS
- GHSA-474g-rpfh-xcf7 · GitHub Advisory Database · CC BY 4.0
- CVE-2005-2100 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences