CVE-2025-7403

Summary

Unsafe handling in bt_conn_tx_processor causes a use-after-free, resulting in a write-before-zero. The written 4 bytes are attacker-controlled, enabling precise memory corruption.

Affected Software

VendorProductVersion RangeStatus
zephyrproject-rtosZephyr* <= 4.1affected

Weaknesses

  • CWE-123: Write-what-where Condition

ADP Enrichment

CISA ADP Vulnrichment

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

References