CVE-2021-43412

HIGH

GNU Hurd < 0.9.20210404-9 - Use-After-Free via Fake Notification Messages

Title source: llm
STIX 2.1

Description

An issue was discovered in GNU Hurd before 0.9 20210404-9. libports accepts fake notification messages from any client on any port, which can lead to port use-after-free. This can be exploited for local privilege escalation to get full root access.

References (2)

Core 2
Core References
Exploit, Mailing List, Vendor Advisory x_refsource_misc
https://lists.gnu.org/archive/html/bug-hurd/2021-05/msg00079.html

Scores

CVSS v3 7.8
EPSS 0.0004
EPSS Percentile 13.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-416
Status published
Products (1)
gnu/hurd < 0.9.20210404-9
Published Nov 07, 2021
Tracked Since Feb 18, 2026