{"uuid": "20a675cd-62cc-40d8-8962-315baade0ece", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2025-37759", "type": "published-proof-of-concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/14266", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2025-37759\n\ud83d\udd25 CVSS Score: N/A\n\ud83d\udd39 Description: In the Linux kernel, the following vulnerability has been resolved:\n\nublk: fix handling recovery & reissue in ublk_abort_queue()\n\nCommit 8284066946e6 (\"ublk: grab request reference when the request is handled\nby userspace\") doesn't grab request reference in case of recovery reissue.\nThen the request can be requeued & re-dispatch & failed when canceling\nuring command.\n\nIf it is one zc request, the request can be freed before io_uring\nreturns the zc buffer back, then cause kernel panic:\n\n[  126.773061] BUG: kernel NULL pointer dereference, address: 00000000000000c8\n[  126.773657] #PF: supervisor read access in kernel mode\n[  126.774052] #PF: error_code(0x0000) - not-present page\n[  126.774455] PGD 0 P4D 0\n[  126.774698] Oops: Oops: 0000 [#1] SMP NOPTI\n[  126.775034] CPU: 13 UID: 0 PID: 1612 Comm: kworker/u64:55 Not tainted 6.14.0_blk+ #182 PREEMPT(full)\n[  126.775676] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-1.fc39 04/01/2014\n[  126.776275] Workqueue: iou_exit io_ring_exit_work\n[  126.776651] RIP: 0010:ublk_io_release+0x14/0x130 [ublk_drv]\n\nFixes it by always grabbing request reference for aborting the request.\n\ud83d\udccf Published: 2025-05-01T12:56:03.462Z\n\ud83d\udccf Modified: 2025-05-01T12:56:03.462Z\n\ud83d\udd17 References:\n1. https://git.kernel.org/stable/c/caa5c8a2358604f38bf0a4afaa5eacda13763067\n2. https://git.kernel.org/stable/c/5d34a30efac9c9c93e150130caa940c0df6053c1\n3. https://git.kernel.org/stable/c/0a21d259ca4d6310fdfcc0284ebbc000e66cbf70\n4. https://git.kernel.org/stable/c/6ee6bd5d4fce502a5b5a2ea805e9ff16e6aa890f", "creation_timestamp": "2025-05-01T13:14:36.000000Z"}