{"id":"CVE-2024-44957","summary":"xen: privcmd: Switch from mutex to spinlock for irqfds","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nxen: privcmd: Switch from mutex to spinlock for irqfds\n\nirqfd_wakeup() gets EPOLLHUP, when it is called by\neventfd_release() by way of wake_up_poll(&ctx-\u003ewqh, EPOLLHUP), which\ngets called under spin_lock_irqsave(). We can't use a mutex here as it\nwill lead to a deadlock.\n\nFix it by switching over to a spin lock.","modified":"2026-04-24T06:42:50.481773275Z","published":"2024-09-04T18:35:55.939Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/44xxx/CVE-2024-44957.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1c682593096a487fd9aebc079a307ff7a6d054a3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/49f2a5da6785b2dbde93e291cae037662440346e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c2775ae4d9227729f8ca9ee2a068f62a00d5ea9c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/44xxx/CVE-2024-44957.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-44957"},{"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":"f8941e6c4c712948663ec5d7bbb546f1a0f4e3f6"},{"fixed":"c2775ae4d9227729f8ca9ee2a068f62a00d5ea9c"},{"fixed":"49f2a5da6785b2dbde93e291cae037662440346e"},{"fixed":"1c682593096a487fd9aebc079a307ff7a6d054a3"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-44957.json"}}],"schema_version":"1.7.5"}