CVE-2021-47049

Summary

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

Drivers: hv: vmbus: Use after free in __vmbus_open()

The "open_info" variable is added to the &vmbus_connection.chn_msg_list, but the error handling frees "open_info" without removing it from the list. This will result in a use after free. First remove it from the list, and then free it.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux6f3d791f300618caf82a2be0c27456edd76d5164 < d5c7b42c9f56ca46b286daa537d181bd7f69214faffected
LinuxLinux6f3d791f300618caf82a2be0c27456edd76d5164 < f37dd5d1b5d38a79a4f7b8dd7bbb705505f05560affected
LinuxLinux6f3d791f300618caf82a2be0c27456edd76d5164 < 2728f289b3270b0e273292b46c534421a33bbfd5affected
LinuxLinux6f3d791f300618caf82a2be0c27456edd76d5164 < 3e9bf43f7f7a46f21ec071cb47be92d0874c48daaffected
LinuxLinux6b32d45bd59982751beb8220e442b40b2706647faffected
LinuxLinux4.13.9 < 4.14affected
LinuxLinux4.14affected
LinuxLinux0 < 4.14unaffected
LinuxLinux5.10.37 <= 5.10.*unaffected
LinuxLinux5.11.21 <= 5.11.*unaffected
LinuxLinux5.12.4 <= 5.12.*unaffected
LinuxLinux5.13 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

References