{"timestamp":"2024-09-10T16:56:57.340202Z","id":"CVE-2022-48840","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/net/ethernet/intel/iavf/iavf_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"85aa76066fef64de8a48d0da6b4071ceac455a94","lessThan":"80974bb730270199c6fcb189af04d5945b87e813","versionType":"git","status":"affected"},{"version":"7b9515172ab4d4c6ac0eae4b71013ee6ce932205","lessThan":"4477b9a4193b35eb3a8afd2adf2d42add2f88d57","versionType":"git","status":"affected"},{"version":"974578017fc1fdd06cea8afb9dfa32602e8529ed","lessThan":"b04683ff8f0823b869c219c78ba0d974bddea0b5","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/net/ethernet/intel/iavf/iavf_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.15.27","lessThan":"5.15.31","versionType":"semver","status":"affected"},{"version":"5.16.13","lessThan":"5.16.17","versionType":"semver","status":"affected"}]}]

https://git.kernel.org/stable/c/4477b9a4193b35eb3a8afd2adf2d42add2f88d57

https://git.kernel.org/stable/c/80974bb730270199c6fcb189af04d5945b87e813

https://git.kernel.org/stable/c/b04683ff8f0823b869c219c78ba0d974bddea0b5

NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NIST CWE-835

OR
     *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.15.27 up to (excluding) 5.15.31
     *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16.13 up to (excluding) 5.16.17

https://git.kernel.org/stable/c/4477b9a4193b35eb3a8afd2adf2d42add2f88d57 No Types Assigned

https://git.kernel.org/stable/c/4477b9a4193b35eb3a8afd2adf2d42add2f88d57 Mailing List, Patch

https://git.kernel.org/stable/c/80974bb730270199c6fcb189af04d5945b87e813 No Types Assigned

https://git.kernel.org/stable/c/80974bb730270199c6fcb189af04d5945b87e813 Mailing List, Patch

https://git.kernel.org/stable/c/b04683ff8f0823b869c219c78ba0d974bddea0b5 No Types Assigned

https://git.kernel.org/stable/c/b04683ff8f0823b869c219c78ba0d974bddea0b5 Mailing List, Patch

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
[52

kernel.org https://git.kernel.org/stable/c/4477b9a4193b35eb3a8afd2adf2d42add2f88d57 [No types assigned]

kernel.org https://git.kernel.org/stable/c/80974bb730270199c6fcb189af04d5945b87e813 [No types assigned]

kernel.org https://git.kernel.org/stable/c/b04683ff8f0823b869c219c78ba0d974bddea0b5 [No types assigned]