{"id":"CVE-2024-49936","summary":"net/xen-netback: prevent UAF in xenvif_flush_hash()","details":"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-\u003enext after the entry becomes free.\n\nTherefore, to solve this, you need to change it to list_for_each_entry_safe.","modified":"2026-04-16T04:35:44.603478625Z","published":"2024-10-21T18:01:57.066Z","related":["SUSE-SU-2024:3983-1","SUSE-SU-2024:3984-1","SUSE-SU-2024:3985-1","SUSE-SU-2024:3986-1","SUSE-SU-2024:4081-1","SUSE-SU-2024:4082-1","SUSE-SU-2024:4100-1","SUSE-SU-2024:4103-1","SUSE-SU-2024:4131-1","SUSE-SU-2024:4140-1","SUSE-SU-2024:4318-1","SUSE-SU-2024:4364-1","SUSE-SU-2024:4387-1","SUSE-SU-2025:0034-1","SUSE-SU-2025:20163-1","SUSE-SU-2025:20164-1","SUSE-SU-2025:20246-1","SUSE-SU-2025:20247-1","USN-7276-1","USN-7277-1","openSUSE-SU-2024:14500-1","openSUSE-SU-2025:14705-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/49xxx/CVE-2024-49936.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0fa5e94a1811d68fbffa0725efe6d4ca62c03d12"},{"type":"WEB","url":"https://git.kernel.org/stable/c/143edf098b80669d05245b2f2367dd156a83a2c5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3c4423b0c4b98213b3438e15061e1d08220e6982"},{"type":"WEB","url":"https://git.kernel.org/stable/c/54d8639af5568fc41c0e274fc3ec9cf86c59fcbb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a0465723b8581cad27164c9073fd780904cd22d4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a7f0073fcd12ed7de185ef2c0af9d0fa1ddef22c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d408889d4b54f5501e4becc4dbbb9065143fbf4e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/efcff6ce7467f01f0753609f420333f3f2ceceda"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/49xxx/CVE-2024-49936.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-49936"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"40d8abdee806d496a60ee607a6d01b1cd7fabaf0"},{"fixed":"3c4423b0c4b98213b3438e15061e1d08220e6982"},{"fixed":"a7f0073fcd12ed7de185ef2c0af9d0fa1ddef22c"},{"fixed":"a0465723b8581cad27164c9073fd780904cd22d4"},{"fixed":"efcff6ce7467f01f0753609f420333f3f2ceceda"},{"fixed":"143edf098b80669d05245b2f2367dd156a83a2c5"},{"fixed":"d408889d4b54f5501e4becc4dbbb9065143fbf4e"},{"fixed":"54d8639af5568fc41c0e274fc3ec9cf86c59fcbb"},{"fixed":"0fa5e94a1811d68fbffa0725efe6d4ca62c03d12"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-49936.json"}}],"schema_version":"1.7.5"}