{"id":"DEBIAN-CVE-2022-48840","details":"In the Linux kernel, the following vulnerability has been resolved:  iavf: Fix hang during reboot/shutdown  Recent commit 974578017fc1 (\"iavf: Add waiting so the port is initialized in remove\") adds a wait-loop at the beginning of iavf_remove() to ensure that port initialization is finished prior unregistering net device. This causes a regression in reboot/shutdown scenario because in this case callback iavf_shutdown() is called and this callback detaches the device, makes it down if it is running and sets its state to __IAVF_REMOVE. Later shutdown callback of associated PF driver (e.g. ice_shutdown) is called. That callback calls among other things sriov_disable() that calls indirectly iavf_remove() (see stack trace below). As the adapter state is already __IAVF_REMOVE then the mentioned loop is end-less and shutdown process hangs.  The patch fixes this by checking adapter's state at the beginning of iavf_remove() and skips the rest of the function if the adapter is already in remove state (shutdown is in progress).  Reproducer: 1. Create VF on PF driven by ice or i40e driver 2. Ensure that the VF is bound to iavf driver 3. Reboot  [52625.981294] sysrq: SysRq : Show Blocked State [52625.988377] task:reboot          state:D stack:    0 pid:17359 ppid:     1 f2 [52625.996732] Call Trace: [52625.999187]  __schedule+0x2d1/0x830 [52626.007400]  schedule+0x35/0xa0 [52626.010545]  schedule_hrtimeout_range_clock+0x83/0x100 [52626.020046]  usleep_range+0x5b/0x80 [52626.023540]  iavf_remove+0x63/0x5b0 [iavf] [52626.027645]  pci_device_remove+0x3b/0xc0 [52626.031572]  device_release_driver_internal+0x103/0x1f0 [52626.036805]  pci_stop_bus_device+0x72/0xa0 [52626.040904]  pci_stop_and_remove_bus_device+0xe/0x20 [52626.045870]  pci_iov_remove_virtfn+0xba/0x120 [52626.050232]  sriov_disable+0x2f/0xe0 [52626.053813]  ice_free_vfs+0x7c/0x340 [ice] [52626.057946]  ice_remove+0x220/0x240 [ice] [52626.061967]  ice_shutdown+0x16/0x50 [ice] [52626.065987]  pci_device_shutdown+0x34/0x60 [52626.070086]  device_shutdown+0x165/0x1c5 [52626.074011]  kernel_restart+0xe/0x30 [52626.077593]  __do_sys_reboot+0x1d2/0x210 [52626.093815]  do_syscall_64+0x5b/0x1a0 [52626.097483]  entry_SYSCALL_64_after_hwframe+0x65/0xca","modified":"2026-08-27T23:04:17.458454731Z","published":"2024-07-16T13:15:11.440Z","upstream":["CVE-2022-48840"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-48840"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.17.3-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-48840.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.17.3-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-48840.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.17.3-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-48840.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"}]}