{"schema_version":"1.9.0","id":"CVE-2024-46762","published":"2024-09-18T07:12:21.854Z","modified":"2026-08-12T03:51:46.798072682Z","summary":"xen: privcmd: Fix possible access to a freed kirqfd instance","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nxen: privcmd: Fix possible access to a freed kirqfd instance\n\nNothing prevents simultaneous ioctl calls to privcmd_irqfd_assign() and\nprivcmd_irqfd_deassign(). If that happens, it is possible that a kirqfd\ncreated and added to the irqfds_list by privcmd_irqfd_assign() may get\nremoved by another thread executing privcmd_irqfd_deassign(), while the\nformer is still using it after dropping the locks.\n\nThis can lead to a situation where an already freed kirqfd instance may\nbe accessed and cause kernel oops.\n\nUse SRCU locking to prevent the same, as is done for the KVM\nimplementation for irqfds.","affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"f8941e6c4c712948663ec5d7bbb546f1a0f4e3f6"},{"fixed":"e997b357b13a7d95de31681fc54fcc34235fa527"},{"fixed":"112fd2f02b308564724b8e81006c254d20945c4b"},{"fixed":"611ff1b1ae989a7bcce3e2a8e132ee30e968c557"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-46762.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.6.0"},{"fixed":"6.6.51"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.10.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-46762.json"}}],"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/112fd2f02b308564724b8e81006c254d20945c4b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/611ff1b1ae989a7bcce3e2a8e132ee30e968c557"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e997b357b13a7d95de31681fc54fcc34235fa527"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/46xxx/CVE-2024-46762.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-46762"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/46xxx/CVE-2024-46762.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}