CVE-2021-46914

Summary

In the Linux kernel, the following vulnerability has been resolved:

ixgbe: fix unbalanced device enable/disable in suspend/resume

pci_disable_device() called in __ixgbe_shutdown() decreases dev->enable_cnt by 1. pci_enable_device_mem() which increases dev->enable_cnt by 1, was removed from ixgbe_resume() in commit 6f82b2558735 ("ixgbe: use generic power management"). This caused unbalanced increase/decrease. So add pci_enable_device_mem() back.

Fix the following call trace.

ixgbe 0000:17:00.1: disabling already-disabled device Call Trace: __ixgbe_shutdown+0x10a/0x1e0 [ixgbe] ixgbe_suspend+0x32/0x70 [ixgbe] pci_pm_suspend+0x87/0x160 ? pci_pm_freeze+0xd0/0xd0 dpm_run_callback+0x42/0x170 __device_suspend+0x114/0x460 async_suspend+0x1f/0xa0 async_run_entry_fn+0x3c/0xf0 process_one_work+0x1dd/0x410 worker_thread+0x34/0x3f0 ? cancel_delayed_work+0x90/0x90 kthread+0x14c/0x170 ? kthread_park+0x90/0x90 ret_from_fork+0x1f/0x30

Affected Software

VendorProductVersion RangeStatus
LinuxLinux6f82b25587354ce7c9c42e0b53d8b0770b900847 < be07581aacae7cd0a073afae8e8862032f794309affected
LinuxLinux6f82b25587354ce7c9c42e0b53d8b0770b900847 < f1b4be4a753caa4056496f679d70550d0c11a264affected
LinuxLinux6f82b25587354ce7c9c42e0b53d8b0770b900847 < debb9df311582c83fe369baa35fa4b92e8a9c58aaffected
LinuxLinux5.9affected
LinuxLinux0 < 5.9unaffected
LinuxLinux5.10.32 <= 5.10.*unaffected
LinuxLinux5.11.16 <= 5.11.*unaffected
LinuxLinux5.12 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References