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Date: Tue, 18 Dec 2018 14:23:07 +0530 (IST)
From: P J P <>
To: oss security list <>
cc: saar amar <>
Subject: CVE-2018-20124 QEMU: rdma: OOB access when building scatter-gather


An out-of-bound stack buffer r/w access issue was found in QEMU's generic RDMA 
back-end implementation. It could occur when a driver tries to build 
scatter/gather element's array in build_host_sge_array() routine.

A guest user/process could use this flaw to crash the QEMU process resulting 
in DoS.

Upstream patch:

This issue was reported by Saar Amar.

Thank you.
Prasad J Pandit / Red Hat Product Security Team
47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F

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