Description (CNA)
tor before 0.4.9.9 was prone to a NULL write after free when sending a CONFLUX_SWITCH cell fails. The return value of relay_send_command_from_edge() was ignored, so a send failure (which calls circuit_mark_for_close() and removes the leg via cfx_del_leg()) would go undetected, causing the caller to write to the now-freed current leg and resulting in a crash. This is TROVE-2026-017.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| torproject / Tor | affected 0.4.8.1-alpha before 0.4.9.9 |
CWE
CWE-252
References
ADP enrichment
No English description supplied.
No references supplied.