Skip to main content

Access of Resource Using Incompatible Type ('Type Confusion')

CVE-2023-23454

Medium
5.5/10

Summary

cbq_classify in net/sched/sch_cbq.c in the Linux kernel through 6.1.4 allows attackers to cause a denial of service (slab-out-of-bounds read) because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition rather than valid classification results).

  • LOW
  • LOCAL
  • NONE
  • UNCHANGED
  • NONE
  • LOW
  • NONE
  • HIGH

CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')

The program allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

References

Advisory Timeline

  • Published