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VuXML ID	Description
8eaaf135-1893-11ed-9b22-002590c1f29c	FreeBSD -- Missing bounds check in 9p message handling Problem Description: The implementation of lib9p's handling of RWALK messages was missing a bounds check needed when unpacking the message contents. The missing check means that the receipt of a specially crafted message will cause lib9p to overwrite unrelated memory. Impact: The bug can be triggered by a malicious bhyve guest kernel to overwrite memory in the bhyve(8) process. This could potentially lead to user-mode code execution on the host, subject to bhyve's Capsicum sandbox. Discovery 2022-08-09 Entry 2022-08-10 FreeBSD ge 13.1 lt 13.1_1 ge 13.0 lt 13.0_12 CVE-2022-23092 SA-22:12.lib9p

VuXML ID

Description

8eaaf135-1893-11ed-9b22-002590c1f29c

FreeBSD -- Missing bounds check in 9p message handling

Problem Description:

The implementation of lib9p's handling of RWALK messages was missing a bounds check needed when unpacking the message contents. The missing check means that the receipt of a specially crafted message will cause lib9p to overwrite unrelated memory.

Impact:

The bug can be triggered by a malicious bhyve guest kernel to overwrite memory in the bhyve(8) process. This could potentially lead to user-mode code execution on the host, subject to bhyve's Capsicum sandbox.

Discovery 2022-08-09
Entry 2022-08-10
FreeBSD

ge 13.1 lt 13.1_1

ge 13.0 lt 13.0_12

CVE-2022-23092
SA-22:12.lib9p