{
	"document":{
		"aggregate_severity":{
			"namespace":"https://nvd.nist.gov/vuln-metrics/cvss",
			"text":"Medium"
		},
		"category":"csaf_vex",
		"csaf_version":"2.0",
		"distribution":{
			"tlp":{
				"label":"WHITE",
				"url":"https:/www.first.org/tlp/"
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		"lang":"en",
		"notes":[
			{
				"text":"wayland security update",
				"category":"general",
				"title":"Synopsis"
			},
			{
				"text":"An update for wayland is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3 and openEuler-22.03-LTS.",
				"category":"general",
				"title":"Summary"
			},
			{
				"text":"Wayland is a protocol for a compositor to talk to its clients as well as a C library implementation of that protocol. The compositor can be a standalone display server running on Linux kernel modesetting and evdev input devices, an X application, or a wayland client itself. The clients can be traditional applications, X servers (rootless or fullscreen) or other display servers. Part of the Wayland project is also the Weston reference implementation of a Wayland compositor. Weston can run as an X client or under Linux KMS and ships with a few demo clients. The Weston compositor is a minimal and fast compositor and is suitable for many embedded and mobile use cases.\n\nSecurity Fix(es):\n\nAn internal reference count is held on the buffer pool, incremented every time a new buffer is created from the pool. The reference count is maintained as an int; on LP64 systems this can cause the reference count to overflow if the client creates a large number of wl_shm buffer objects, or if it can coerce the server to create a large number of external references to the buffer storage. With the reference count overflowing, a use-after-free can be constructed on the wl_shm_pool tracking structure, where values may be incremented or decremented; it may also be possible to construct a limited oracle to leak 4 bytes of server-side memory to the attacking client at a time.(CVE-2021-3782)",
				"category":"general",
				"title":"Description"
			},
			{
				"text":"An update for wayland is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3 and openEuler-22.03-LTS.\n\nopenEuler 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.",
				"category":"general",
				"title":"Topic"
			},
			{
				"text":"Medium",
				"category":"general",
				"title":"Severity"
			},
			{
				"text":"wayland",
				"category":"general",
				"title":"Affected Component"
			}
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		"publisher":{
			"issuing_authority":"openEuler security committee",
			"name":"openEuler",
			"namespace":"https://www.openeuler.org",
			"contact_details":"openeuler-security@openeuler.org",
			"category":"vendor"
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		"references":[
			{
				"summary":"openEuler-SA-2022-1920",
				"category":"self",
				"url":"https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1920"
			},
			{
				"summary":"CVE-2021-3782",
				"category":"self",
				"url":"https://www.openeuler.org/en/security/cve/detail?cveId=CVE-2021-3782&packageName=wayland"
			},
			{
				"summary":"nvd cve",
				"category":"external",
				"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3782"
			},
			{
				"summary":"openEuler-SA-2022-1920 vex file",
				"category":"self",
				"url":"https://repo.openeuler.org/security/data/csaf/advisories/2022/csaf-openeuler-sa-2022-1920.json"
			}
		],
		"title":"An update for wayland is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3 and openEuler-22.03-LTS",
		"tracking":{
			"initial_release_date":"2022-09-16T09:45:01+08:00",
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					"summary":"Initial",
					"number":"1.0.0"
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					"date":"2024-10-31T09:45:01+08:00",
					"summary":"final",
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				"date":"2024-10-31T09:45:01+08:00",
				"engine":{
					"name":"openEuler CSAF Tool V1.0"
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			"current_release_date":"2024-10-31T09:45:01+08:00",
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						"openEuler-20.03-LTS-SP1:wayland-devel-1.17.0-3.oe1.aarch64",
						"openEuler-20.03-LTS-SP1:wayland-1.17.0-3.oe1.aarch64",
						"openEuler-20.03-LTS-SP3:wayland-1.17.0-3.oe1.aarch64",
						"openEuler-20.03-LTS-SP3:wayland-devel-1.17.0-3.oe1.aarch64",
						"openEuler-20.03-LTS-SP3:wayland-debugsource-1.17.0-3.oe1.aarch64",
						"openEuler-20.03-LTS-SP3:wayland-debuginfo-1.17.0-3.oe1.aarch64",
						"openEuler-22.03-LTS:wayland-debuginfo-1.19.91-4.oe2203.aarch64",
						"openEuler-22.03-LTS:wayland-1.19.91-4.oe2203.aarch64",
						"openEuler-22.03-LTS:wayland-devel-1.19.91-4.oe2203.aarch64",
						"openEuler-22.03-LTS:wayland-debugsource-1.19.91-4.oe2203.aarch64",
						"openEuler-20.03-LTS-SP1:wayland-help-1.17.0-3.oe1.noarch",
						"openEuler-20.03-LTS-SP3:wayland-help-1.17.0-3.oe1.noarch",
						"openEuler-22.03-LTS:wayland-help-1.19.91-4.oe2203.noarch",
						"openEuler-20.03-LTS-SP1:wayland-1.17.0-3.oe1.src",
						"openEuler-20.03-LTS-SP3:wayland-1.17.0-3.oe1.src",
						"openEuler-22.03-LTS:wayland-1.19.91-4.oe2203.src",
						"openEuler-20.03-LTS-SP1:wayland-debuginfo-1.17.0-3.oe1.x86_64",
						"openEuler-20.03-LTS-SP1:wayland-devel-1.17.0-3.oe1.x86_64",
						"openEuler-20.03-LTS-SP1:wayland-debugsource-1.17.0-3.oe1.x86_64",
						"openEuler-20.03-LTS-SP1:wayland-1.17.0-3.oe1.x86_64",
						"openEuler-20.03-LTS-SP3:wayland-devel-1.17.0-3.oe1.x86_64",
						"openEuler-20.03-LTS-SP3:wayland-1.17.0-3.oe1.x86_64",
						"openEuler-20.03-LTS-SP3:wayland-debugsource-1.17.0-3.oe1.x86_64",
						"openEuler-20.03-LTS-SP3:wayland-debuginfo-1.17.0-3.oe1.x86_64",
						"openEuler-22.03-LTS:wayland-devel-1.19.91-4.oe2203.x86_64",
						"openEuler-22.03-LTS:wayland-1.19.91-4.oe2203.x86_64",
						"openEuler-22.03-LTS:wayland-debuginfo-1.19.91-4.oe2203.x86_64",
						"openEuler-22.03-LTS:wayland-debugsource-1.19.91-4.oe2203.x86_64"
					]
				}
			],
			"threats":[
				{
					"details":"Medium",
					"category":"impact"
				}
			],
			"title":"CVE-2021-3782"
		}
	]
}