This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-77584 →
DEBIAN-CVE-2026-77584
Tor before 0.4.9.10 did not reject a CONFLUX_LINK cell that arrives on a circuit which already has attached streams. A malicious client could send a R...
Original description
The description as published by the source.
Tor before 0.4.9.10 did not reject a CONFLUX_LINK cell that arrives on a circuit which already has attached streams. A malicious client could send a RELAY_COMMAND_BEGIN before the CONFLUX_LINK on the same circuit, attaching an exit stream that would later end up orphan leaving a dangling circuit back-pointer and a use-after-free (UAF) when the circuit is freed. This is TROVE-2026-025.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:12
tor
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.9.11-0+deb12u1"}]}]
Debian:13
tor
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.9.11-0+deb13u1"}]}]
Debian:14
tor
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.9.11-1"}]}]
References
- advisory security-tracker.debian.org