{"vulnerability": "cve-2021-3782", "sightings": [{"uuid": "7f1b747e-0b4a-4b7f-8d72-89139006ae31", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-3782", "type": "seen", "source": "https://t.me/cibsecurity/50360", "content": "\u203c CVE-2021-3782 \u203c\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.\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "creation_timestamp": "2022-09-23T20:43:48.000000Z"}, {"uuid": "a6fe4a7e-2d3c-4598-a5fd-a70791629e2f", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-3782", "type": "seen", "source": "https://bsky.app/profile/ferramentaslinux.bsky.social/post/3mpbly5ylg22j", "content": "\ud83d\udee1\ufe0f RLSA-2023:2786: Wayland moderate security update for Rocky Linux 8. CVE-2021-3782 corrige overflow de refer\u00eancia no libwayland-server que permite use-after-free e vazamento de mem\u00f3ria.  Saiba mais: -> tinyurl.com/4rmxcjsb", "creation_timestamp": "2026-06-27T13:48:54.321514Z"}, {"uuid": "e2e8e2bb-6759-41ce-b649-56efe4a0d036", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-3782", "type": "seen", "source": "https://bsky.app/profile/ferramentaslinux.bsky.social/post/3mpbly7bd4s2j", "content": "\ud83d\udee1\ufe0f RLSA-2023:2786: Wayland moderate security update for Rocky Linux 8. CVE-2021-3782 corrige overflow de refer\u00eancia no libwayland-server que permite use-after-free e vazamento de mem\u00f3ria.  Saiba mais: -> tinyurl.com/4rmxcjsb", "creation_timestamp": "2026-06-27T13:48:54.730034Z"}]}