CVE-2021-47605

Summary

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

vduse: fix memory corruption in vduse_dev_ioctl()

The "config.offset" comes from the user. There needs to a check to prevent it being out of bounds. The "config.offset" and "dev->config_size" variables are both type u32. So if the offset if out of bounds then the "dev->config_size - config.offset" subtraction results in a very high u32 value. The out of bounds offset can result in memory corruption.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxc8a6153b6c59d95c0e091f053f6f180952ade91e < e6c67560b4341914bec32ec536e931c22062af65affected
LinuxLinuxc8a6153b6c59d95c0e091f053f6f180952ade91e < ff9f9c6e74848170fcb45c8403c80d661484c8c9affected
LinuxLinux5.15affected
LinuxLinux0 < 5.15unaffected
LinuxLinux5.15.11 <= 5.15.*unaffected
LinuxLinux5.16 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

References