{"cve":"CVE-2022-48765","nvd":{"published":"2024-06-20T12:15:14.530","modified":"2026-06-17T05:16:08.440","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: LAPIC: Also cancel preemption timer during SET_LAPIC\n\nThe below warning is splatting during guest reboot.\n\n  ------------[ cut here ]------------\n  WARNING: CPU: 0 PID: 1931 at arch/x86/kvm/x86.c:10322 kvm_arch_vcpu_ioctl_run+0x874/0x880 [kvm]\n  CPU: 0 PID: 1931 Comm: qemu-system-x86 Tainted: G          I       5.17.0-rc1+ #5\n  RIP: 0010:kvm_arch_vcpu_ioctl_run+0x874/0x880 [kvm]\n  Call Trace:\n   <TASK>\n   kvm_vcpu_ioctl+0x279/0x710 [kvm]\n   __x64_sys_ioctl+0x83/0xb0\n   do_syscall_64+0x3b/0xc0\n   entry_SYSCALL_64_after_hwframe+0x44/0xae\n  RIP: 0033:0x7fd39797350b\n\nThis can be triggered by not exposing tsc-deadline mode and doing a reboot in\nthe guest. The lapic_shutdown() function which is called in sys_reboot path\nwill not disarm the flying timer, it just masks LVTT. lapic_shutdown() clears\nAPIC state w/ LVT_MASKED and timer-mode bit is 0, this can trigger timer-mode\nswitch between tsc-deadline and oneshot/periodic, which can result in preemption\ntimer be cancelled in apic_update_lvtt(). However, We can't depend on this when\nnot exposing tsc-deadline mode and oneshot/periodic modes emulated by preemption\ntimer. Qemu will synchronise states around reset, let's cancel preemption timer\nunder KVM_SET_LAPIC.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/35fe7cfbab2e81f1afb23fc4212210b1de6d9633","https://git.kernel.org/stable/c/54b3439c8e70e0bcfea59aeef9dd98908cbbf655","https://git.kernel.org/stable/c/ce55f63f6cea4cab8ae9212f73285648a5baa30d","https://git.kernel.org/stable/c/35fe7cfbab2e81f1afb23fc4212210b1de6d9633","https://git.kernel.org/stable/c/54b3439c8e70e0bcfea59aeef9dd98908cbbf655"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:52:00.836172422+00:00"},"epss":{"cve":"CVE-2022-48765","score":0.0021,"percentile":0.11181,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}