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CVE-2022-48840— iavf: Fix hang during reboot/shutdown

EPSS 0.02% · P5
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I. Basic Information for CVE-2022-48840

Vulnerability Information
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Vulnerability Title
iavf: Fix hang during reboot/shutdown
Source: NVD (National Vulnerability Database)
Vulnerability Description
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
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于iavf模块中发现重启/关机时的挂起问题。在iavf_remove函数中添加的等待循环可能会导致重启或关机时的死循环。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 85aa76066fef64de8a48d0da6b4071ceac455a94 ~ 80974bb730270199c6fcb189af04d5945b87e813 -
LinuxLinux 5.15.27 ~ 5.15.31 -

II. Public POCs for CVE-2022-48840

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III. Intelligence Information for CVE-2022-48840

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Same Patch Batch · Linux · 2024-07-16 · 98 CVEs total

CVE-2022-48831ima: fix reference leak in asymmetric_verify()
CVE-2022-48825scsi: qedf: Add stag_work to all the vports
CVE-2022-48821misc: fastrpc: avoid double fput() on failed usercopy
CVE-2022-48819tcp: take care of mixed splice()/sendmsg(MSG_ZEROCOPY) case
CVE-2022-48820phy: stm32: fix a refcount leak in stm32_usbphyc_pll_enable()
CVE-2022-48818net: dsa: mv88e6xxx: don't use devres for mdiobus
CVE-2022-48817net: dsa: ar9331: register the mdiobus under devres
CVE-2022-48822usb: f_fs: Fix use-after-free for epfile
CVE-2022-48828NFSD: Fix ia_size underflow
CVE-2022-48830can: isotp: fix potential CAN frame reception race in isotp_rcv()
CVE-2022-48829NFSD: Fix NFSv3 SETATTR/CREATE's handling of large file sizes
CVE-2022-48832audit: don't deref the syscall args when checking the openat2 open_how::flags
CVE-2022-48834usb: usbtmc: Fix bug in pipe direction for control transfers
CVE-2022-48833btrfs: skip reserved bytes warning on unmount after log cleanup failure
CVE-2022-48835scsi: mpt3sas: Page fault in reply q processing
CVE-2022-48837usb: gadget: rndis: prevent integer overflow in rndis_set_response()
CVE-2022-48836Input: aiptek - properly check endpoint type
CVE-2022-48838usb: gadget: Fix use-after-free bug by not setting udc->dev.driver
CVE-2022-48839net/packet: fix slab-out-of-bounds access in packet_recvmsg()
CVE-2022-48842ice: Fix race condition during interface enslave

Showing top 20 of 98 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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