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	<DocumentTitle xml:lang="en">An update for qemu is now available for openEuler-20.03-LTS-SP1 and openEuler-20.03-LTS-SP3</DocumentTitle>
	<DocumentType>Security Advisory</DocumentType>
	<DocumentPublisher Type="Vendor">
		<ContactDetails>openeuler-security@openeuler.org</ContactDetails>
		<IssuingAuthority>openEuler security committee</IssuingAuthority>
	</DocumentPublisher>
	<DocumentTracking>
		<Identification>
			<ID>openEuler-SA-2022-1690</ID>
		</Identification>
		<Status>Final</Status>
		<Version>1.0</Version>
		<RevisionHistory>
			<Revision>
				<Number>1.0</Number>
				<Date>2022-06-02</Date>
				<Description>Initial</Description>
			</Revision>
		</RevisionHistory>
		<InitialReleaseDate>2022-06-02</InitialReleaseDate>
		<CurrentReleaseDate>2022-06-02</CurrentReleaseDate>
		<Generator>
			<Engine>openEuler SA Tool V1.0</Engine>
			<Date>2022-06-02</Date>
		</Generator>
	</DocumentTracking>
	<DocumentNotes>
		<Note Title="Synopsis" Type="General" Ordinal="1" xml:lang="en">qemu security update</Note>
		<Note Title="Summary" Type="General" Ordinal="2" xml:lang="en">An update for qemu is now available for openEuler-20.03-LTS-SP1 and openEuler-20.03-LTS-SP3.</Note>
		<Note Title="Description" Type="General" Ordinal="3" xml:lang="en">QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.

Security Fix(es):

sd_wp_addr in hw/sd/sd.c in QEMU 4.2.0 uses an unvalidated address, which leads to an out-of-bounds read during sdhci_write() operations. A guest OS user can crash the QEMU process.(CVE-2020-13253)

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.(CVE-2021-20257)</Note>
		<Note Title="Topic" Type="General" Ordinal="4" xml:lang="en">An update for qemu is now available for openEuler-20.03-LTS-SP1 and openEuler-20.03-LTS-SP3.

openEuler Security has rated this update as having a security impact of medium. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section.</Note>
		<Note Title="Severity" Type="General" Ordinal="5" xml:lang="en">Medium</Note>
		<Note Title="Affected Component" Type="General" Ordinal="6" xml:lang="en">qemu</Note>
	</DocumentNotes>
	<DocumentReferences>
		<Reference Type="Self">
			<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1690</URL>
		</Reference>
		<Reference Type="openEuler CVE">
			<URL>https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2020-13253</URL>
			<URL>https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-20257</URL>
		</Reference>
		<Reference Type="Other">
			<URL>https://nvd.nist.gov/vuln/detail/CVE-2020-13253</URL>
			<URL>https://nvd.nist.gov/vuln/detail/CVE-2021-20257</URL>
		</Reference>
	</DocumentReferences>
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	<Vulnerability Ordinal="1" xmlns="http://www.icasi.org/CVRF/schema/vuln/1.1">
		<Notes>
			<Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">sd_wp_addr in hw/sd/sd.c in QEMU 4.2.0 uses an unvalidated address, which leads to an out-of-bounds read during sdhci_write() operations. A guest OS user can crash the QEMU process.</Note>
		</Notes>
		<ReleaseDate>2022-06-02</ReleaseDate>
		<CVE>CVE-2020-13253</CVE>
		<ProductStatuses>
			<Status Type="Fixed">
				<ProductID>openEuler-20.03-LTS-SP1</ProductID>
				<ProductID>openEuler-20.03-LTS-SP3</ProductID>
			</Status>
		</ProductStatuses>
		<Threats>
			<Threat Type="Impact">
				<Description>Medium</Description>
			</Threat>
		</Threats>
		<CVSSScoreSets>
			<ScoreSet>
				<BaseScore>5.5</BaseScore>
				<Vector>AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H</Vector>
			</ScoreSet>
		</CVSSScoreSets>
		<Remediations>
			<Remediation Type="Vendor Fix">
				<Description>qemu security update</Description>
				<DATE>2022-06-02</DATE>
				<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1690</URL>
			</Remediation>
		</Remediations>
	</Vulnerability>
	<Vulnerability Ordinal="2" xmlns="http://www.icasi.org/CVRF/schema/vuln/1.1">
		<Notes>
			<Note Title="Vulnerability Description" Type="General" Ordinal="2" xml:lang="en">An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.</Note>
		</Notes>
		<ReleaseDate>2022-06-02</ReleaseDate>
		<CVE>CVE-2021-20257</CVE>
		<ProductStatuses>
			<Status Type="Fixed">
				<ProductID>openEuler-20.03-LTS-SP1</ProductID>
				<ProductID>openEuler-20.03-LTS-SP3</ProductID>
			</Status>
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		<Threats>
			<Threat Type="Impact">
				<Description>Medium</Description>
			</Threat>
		</Threats>
		<CVSSScoreSets>
			<ScoreSet>
				<BaseScore>6.5</BaseScore>
				<Vector>AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H</Vector>
			</ScoreSet>
		</CVSSScoreSets>
		<Remediations>
			<Remediation Type="Vendor Fix">
				<Description>qemu security update</Description>
				<DATE>2022-06-02</DATE>
				<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1690</URL>
			</Remediation>
		</Remediations>
	</Vulnerability>
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