877609 – (CVE-2022-3165, CVE-2022-3872) app-emulation/qemu: multiple vulnerabilities

Bug 877609 (CVE-2022-3165, CVE-2022-3872) - app-emulation/qemu: multiple vulnerabilities

Summary: app-emulation/qemu: multiple vulnerabilities

Status:	CONFIRMED

Alias:	CVE-2022-3165, CVE-2022-3872

Product:	Gentoo Security
Classification:	Unclassified
Component:	Vulnerabilities (show other bugs)
Hardware:	All Linux

Importance:	Normal normal
Assignee:	Gentoo Security

URL:
Whiteboard:	A3 [upstream/ebuild]
Keywords:

Depends on:
Blocks:

Reported:	2022-10-19 02:32 UTC by John Helmert III
Modified:	2022-11-08 01:48 UTC (History)
CC List:	5 users (show)

See Also:
Package list:
Runtime testing required:	---

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Description John Helmert III archtester

2022-10-19 02:32:16 UTC

CVE-2022-3165:

An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the extended format. A malicious client could use this flaw to make QEMU unresponsive by sending a specially crafted payload message, resulting in a denial of service.

Patch: https://gitlab.com/qemu-project/qemu/-/commit/d307040b18

Comment 1 John Helmert III archtester

2022-11-08 01:48:38 UTC

CVE-2022-3872 (https://lists.nongnu.org/archive/html/qemu-devel/2022-11/msg01068.html):

An off-by-one read/write issue was found in the SDHCI device of QEMU. It occurs when reading/writing the Buffer Data Port Register in sdhci_read_dataport and sdhci_write_dataport, respectively, if data_count == block_size. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.

Patch at above URL, doesn't seem to have made it into git yet.