{"id":"DEBIAN-CVE-2021-47283","details":"In the Linux kernel, the following vulnerability has been resolved:  net:sfc: fix non-freed irq in legacy irq mode  SFC driver can be configured via modparam to work using MSI-X, MSI or legacy IRQ interrupts. In the last one, the interrupt was not properly released on module remove.  It was not freed because the flag irqs_hooked was not set during initialization in the case of using legacy IRQ.  Example of (trimmed) trace during module remove without this fix:  remove_proc_entry: removing non-empty directory 'irq/125', leaking at least '0000:3b:00.1' WARNING: CPU: 39 PID: 3658 at fs/proc/generic.c:715 remove_proc_entry+0x15c/0x170 ...trimmed... Call Trace:  unregister_irq_proc+0xe3/0x100  free_desc+0x29/0x70  irq_free_descs+0x47/0x70  mp_unmap_irq+0x58/0x60  acpi_unregister_gsi_ioapic+0x2a/0x40  acpi_pci_irq_disable+0x78/0xb0  pci_disable_device+0xd1/0x100  efx_pci_remove+0xa1/0x1e0 [sfc]  pci_device_remove+0x38/0xa0  __device_release_driver+0x177/0x230  driver_detach+0xcb/0x110  bus_remove_driver+0x58/0xd0  pci_unregister_driver+0x2a/0xb0  efx_exit_module+0x24/0xf40 [sfc]  __do_sys_delete_module.constprop.0+0x171/0x280  ? exit_to_user_mode_prepare+0x83/0x1d0  do_syscall_64+0x3d/0x80  entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f9f9385800b ...trimmed...","modified":"2026-09-15T09:02:31.196666962Z","published":"2024-05-21T15:15:16.503Z","upstream":["CVE-2021-47283"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2021-47283"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.10.46-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47283.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.10.46-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47283.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.10.46-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47283.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}