Portage before 2.0.50-r3 allows local users to overwrite arbitrary files via a hard link attack on the lockfiles.
Priority LOW 25CWE-59Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
Portage before 2.0.50-r3 allows local users to overwrite arbitrary files via a hard link attack on the lockfiles.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00366 30th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
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 · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gentoo:portage:*:*:*:*:*:*:*:* | before 2.0.50 | Vulnerable | gentoo |
| cpe:2.3:a:gentoo:portage:2.0.50:-:*:*:*:*:*:* | 2.0.50 | Vulnerable | gentoo |
| cpe:2.3:o:gentoo:linux:1.4:-:*:*:*:*:*:* | 1.4 | Vulnerable | gentoo |
| cpe:2.3:o:gentoo:linux:1.4:rc1:*:*:*:*:*:* | 1.4 rc1 | Vulnerable | gentoo |
| cpe:2.3:o:gentoo:linux:1.4:rc2:*:*:*:*:*:* | 1.4 rc2 | Vulnerable | gentoo |
- cpe:2.3:a:gentoo:portage:*:*:*:*:*:*:*:* Versions before 2.0.50 Vulnerable ·gentoo
- cpe:2.3:a:gentoo:portage:2.0.50:-:*:*:*:*:*:* Versions 2.0.50 Vulnerable ·gentoo
- cpe:2.3:o:gentoo:linux:1.4:-:*:*:*:*:*:* Versions 1.4 Vulnerable ·gentoo
- cpe:2.3:o:gentoo:linux:1.4:rc1:*:*:*:*:*:* Versions 1.4 rc1 Vulnerable ·gentoo
- cpe:2.3:o:gentoo:linux:1.4:rc2:*:*:*:*:*:* Versions 1.4 rc2 Vulnerable ·gentoo
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2004-1901
- 2026-10-03 Alias added: GHSA-m82x-j38m-84qv
References
Advisory 1
More gentoo Linux vulnerabilities
- TI-2024-11208 Rsync: heap buffer overflow in rsync due to improper checksum length handling CVSS 3.1CRITICAL 9.8
- TI-2004-00549 The Unreal Engine, as used in DeusEx 1.112fm and earlier, Devastation 390 and earlier… CVSS 2.0HIGH 10.0
- TI-2002-01263 Buffer overflow in Sendmail 5.79 to 8.12.7 allows remote attackers to execute arbitrary… CVSS 2.0HIGH 10.0
- TI-2003-00642 The prescan function in Sendmail 8.12.9 allows remote attackers to execute arbitrary code… CVSS 2.0HIGH 10.0
- TI-2004-00942 The search function in TWiki 20030201 allows remote attackers to execute arbitrary… CVSS 2.0HIGH 10.0
- TI-2024-11209 Rsync: info leak via uninitialized stack contents CVSS 3.1HIGH 7.5
Sources
- CVE-2004-1901 · CVE Program
- CVE-2004-1901 · NVD
- FIRST EPSS
- GHSA-m82x-j38m-84qv · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences