{"uuid": "273a801a-657e-483d-86f0-36bc7ea50c95", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2024-49936", "type": "published-proof-of-concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/16653", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2024-49936\n\ud83d\udd25 CVSS Score: N/A\n\ud83d\udd39 Description: In the Linux kernel, the following vulnerability has been resolved:\n\nnet/xen-netback: prevent UAF in xenvif_flush_hash()\n\nDuring the list_for_each_entry_rcu iteration call of xenvif_flush_hash,\nkfree_rcu does not exist inside the rcu read critical section, so if\nkfree_rcu is called when the rcu grace period ends during the iteration,\nUAF occurs when accessing head->next after the entry becomes free.\n\nTherefore, to solve this, you need to change it to list_for_each_entry_safe.\n\ud83d\udccf Published: 2024-10-21T18:01:57.066Z\n\ud83d\udccf Modified: 2025-05-16T07:25:02.313Z\n\ud83d\udd17 References:\n1. https://git.kernel.org/stable/c/3c4423b0c4b98213b3438e15061e1d08220e6982\n2. https://git.kernel.org/stable/c/a7f0073fcd12ed7de185ef2c0af9d0fa1ddef22c\n3. https://git.kernel.org/stable/c/a0465723b8581cad27164c9073fd780904cd22d4\n4. https://git.kernel.org/stable/c/efcff6ce7467f01f0753609f420333f3f2ceceda\n5. https://git.kernel.org/stable/c/143edf098b80669d05245b2f2367dd156a83a2c5\n6. https://git.kernel.org/stable/c/d408889d4b54f5501e4becc4dbbb9065143fbf4e\n7. https://git.kernel.org/stable/c/54d8639af5568fc41c0e274fc3ec9cf86c59fcbb\n8. https://git.kernel.org/stable/c/0fa5e94a1811d68fbffa0725efe6d4ca62c03d12", "creation_timestamp": "2025-05-16T07:34:07.000000Z"}