CVE-2021-47372

Summary

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

net: macb: fix use after free on rmmod

plat_dev->dev->platform_data is released by platform_device_unregister(), use of pclk and hclk is a use-after-free. Since device unregister won't need a clk device we adjust the function call sequence to fix this issue.

[ 31.261225] BUG: KASAN: use-after-free in macb_remove+0x77/0xc6 [macb_pci] [ 31.275563] Freed by task 306: [ 30.276782] platform_device_release+0x25/0x80

Affected Software

VendorProductVersion RangeStatus
LinuxLinux83a77e9ec4150ee4acc635638f7dedd9da523a26 < a7d521cc726f30b8e679a6f36d04b18a8ab3c536affected
LinuxLinux83a77e9ec4150ee4acc635638f7dedd9da523a26 < 46670fb832ee80943715df618632ca13c2e96f2baffected
LinuxLinux83a77e9ec4150ee4acc635638f7dedd9da523a26 < 1da750d1e2140ef43d64d17f301ff6f41b45541eaffected
LinuxLinux83a77e9ec4150ee4acc635638f7dedd9da523a26 < 7721221e87d25c9840d9ca6b986dbdc410d5ce2baffected
LinuxLinux83a77e9ec4150ee4acc635638f7dedd9da523a26 < 4ad6f2d23b0f6ac0d3e5f3102a4256d1c86c90f5affected
LinuxLinux83a77e9ec4150ee4acc635638f7dedd9da523a26 < d82d5303c4c539db86588ffb5dc5b26c3f1513e8affected
LinuxLinux4.10affected
LinuxLinux0 < 4.10unaffected
LinuxLinux4.14.249 <= 4.14.*unaffected
LinuxLinux4.19.209 <= 4.19.*unaffected
LinuxLinux5.4.150 <= 5.4.*unaffected
LinuxLinux5.10.70 <= 5.10.*unaffected
LinuxLinux5.14.9 <= 5.14.*unaffected
LinuxLinux5.15 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

References