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NULL Pointer Dereference


Severity Medium
Score 4.9/10


net/dns_resolver/dns_key.c in the Linux kernel before 2.6.38 allows remote DNS servers to cause a denial of service (NULL pointer dereference and OOPS) by not providing a valid response to a DNS query, as demonstrated by an erroneous query, which triggers improper handling of error data within a DNS resolver key.

  • LOW
  • NONE
  • NONE
  • NONE

CWE-476 - NULL Pointer Dereference

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.


Advisory Timeline

  • Published