{"vulnerability": "CVE-2023-1583", "sightings": [{"uuid": "70f56593-64d9-4483-87ec-4f20a762f736", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2023-1583", "type": "seen", "source": "Telegram/y2KU6NoP8xRdsgCKBFm9phzpZtFMughiR21JjUB838p0i0ln", "content": "", "creation_timestamp": "2025-02-20T23:26:56.000000Z"}, {"uuid": "3efe3269-de55-42f5-8259-c3c1ff0f608e", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2023-1583", "type": "published-proof-of-concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/4802", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2023-1583\n\ud83d\udd25 CVSS Score: N/A\n\ud83d\udd39 Description: A NULL pointer dereference was found in io_file_bitmap_get in io_uring/filetable.c in the io_uring sub-component in the Linux Kernel. When fixed files are unregistered, some context information (file_alloc_{start,end} and alloc_hint) is not cleared. A subsequent request that has auto index selection enabled via IORING_FILE_INDEX_ALLOC can cause a NULL pointer dereference. An unprivileged user can use the flaw to cause a system crash.\n\ud83d\udccf Published: 2023-03-24T00:00:00.000Z\n\ud83d\udccf Modified: 2025-02-20T18:50:07.985Z\n\ud83d\udd17 References:\n1. https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?h=io_uring-6.3&id=761efd55a0227aca3a69deacdaa112fffd44fe37\n2. https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=02a4d923e4400a36d340ea12d8058f69ebf3a383", "creation_timestamp": "2025-02-20T19:49:30.000000Z"}]}