According to the versions of the wayland packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - An 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)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the wayland packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - An 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)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2023:2786 advisory.

    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.

    The following packages have been upgraded to a later upstream version: wayland (1.21.0). (BZ#2137625)

    Security Fix(es):

    * wayland: libwayland-server wl_shm reference-count overflow (CVE-2021-3782)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.8 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the CESA-2023:2786 advisory.

  - An 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)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2023:0090 advisory.

    Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

      CVE-2021-3782:
      An 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.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2023-5915:03 advisory.

    * wayland: libwayland-server wl_shm reference-count overflow (CVE-2021-3782)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

According to the versions of the wayland package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - An 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)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the wayland package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - An 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)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2023-2786 advisory.

    [1.21.0-1]
    - wayland 1.21.0 (rhbz#2137625)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2023-203 advisory.

    An 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)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - An 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)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
171181	EulerOS 2.0 SP8 : wayland (EulerOS-SA-2023-1343)	Nessus	Huawei Local Security Checks	2023/2/8	2023/9/5	medium
175216	EulerOS Virtualization 3.0.2.0 : wayland (EulerOS-SA-2023-1710)	Nessus	Huawei Local Security Checks	2023/5/7	2023/6/2	medium
175825	RHEL 8 : wayland (RHSA-2023:2786)	Nessus	Red Hat Local Security Checks	2023/5/16	2024/11/7	medium
175896	CentOS 8 : wayland (CESA-2023:2786)	Nessus	CentOS Local Security Checks	2023/5/16	2023/6/2	medium
238607	TencentOS Server 3: wayland (TSSA-2023:0090)	Nessus	Tencent Local Security Checks	2025/6/16	2025/11/20	medium
292660	MiracleLinux 8 : wayland-1.21.0-1.el8 (AXSA:2023-5915:03)	Nessus	Miracle Linux Local Security Checks	2026/1/20	2026/1/20	medium
168974	EulerOS 2.0 SP10 : wayland (EulerOS-SA-2022-2862)	Nessus	Huawei Local Security Checks	2022/12/21	2023/9/12	medium
169803	EulerOS Virtualization 2.9.1 : wayland (EulerOS-SA-2023-1209)	Nessus	Huawei Local Security Checks	2023/1/10	2023/9/8	medium
176315	Oracle Linux 8 : wayland (ELSA-2023-2786)	Nessus	Oracle Linux Local Security Checks	2023/5/24	2024/10/22	medium
176935	Amazon Linux 2023 : libwayland-client, libwayland-cursor, libwayland-egl (ALAS2023-2023-203)	Nessus	Amazon Linux Local Security Checks	2023/6/8	2024/12/11	medium
224053	Linux Distros Unpatched Vulnerability : CVE-2021-3782	Nessus	Misc.	2025/3/5	2025/9/5	medium

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