CVE-2022-48932

Summary

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

net/mlx5: DR, Fix slab-out-of-bounds in mlx5_cmd_dr_create_fte

When adding a rule with 32 destinations, we hit the following out-of-band access issue:

BUG: KASAN: slab-out-of-bounds in mlx5_cmd_dr_create_fte+0x18ee/0x1e70

This patch fixes the issue by both increasing the allocated buffers to accommodate for the needed actions and by checking the number of actions to prevent this issue when a rule with too many actions is provided.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1ffd498901c1134a7cbecf5409e12c064c39cef9 < 4ad319cdfbe555b4ff67bc608736c46a6930c848affected
LinuxLinux1ffd498901c1134a7cbecf5409e12c064c39cef9 < 0aec12d97b2036af0946e3d582144739860ac07baffected
LinuxLinux5.16affected
LinuxLinux0 < 5.16unaffected
LinuxLinux5.16.12 <= 5.16.*unaffected
LinuxLinux5.17 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References