TI-2007-01156 Aliases CVE-2007-1189 GHSA-4763-4594-fp9p

Integer overflow in the envwrite function in the Alcatel-Lucent Bell Labs Plan 9 kernel…

LOW 33Published 2007-03-02 · Updated 2024-08-07

Key facts

Attack vector: Local
Privileges required: None
User interaction: — Not recorded in CVSS 2.0
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: Complete · Complete · Complete
Fix status: No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

Integer overflow in the envwrite function in the Alcatel-Lucent Bell Labs Plan 9 kernel allows local users to overwrite certain memory addresses with kernel memory via a large n argument, as demonstrated by (1) modifying the iseve function to gain privileges and (2) making the devpermcheck function grant unrestricted device permissions.

Why it matters now

EPSS 0.00804 56th percentileScored 2026-11-07

Public exploit Yes 3 exploit referencesTagged by the CNA and NVD

Fix No fix listed No fixed version in the sources yet

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 · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:bell_labs:plan_9::::::::	all versions	Vulnerable	Bell Labs

cpe:2.3:o:bell_labs:plan_9:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Bell Labs

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2007-1189
2026-10-03 Alias added: GHSA-4763-4594-fp9p

References

Exploit 3

Other 1

34956

Sources

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