Below are the major changes of the released versions and links to more detailed release notes.
Stable
Yesterday, we quietly released version 0.4.8.20 to allow relay operators some time to upgrade and help mitigate medium-severityremote crash issues that were reported a few days ago through the HackerOne platform.
We have reserved two TROVE entries for these issues: TROVE-2025-014 and TROVE-2025-015.
Once a sufficient number of relays have upgraded, we will make the tickets associated with these TROVE entries public in the near future.
In the meantime, if any relay operators experience crashes or unusually high memory usage, please report it to us via the Tor relays mailing list: tor-relays@lists.torproject.org.
As of this announcement, our 0.4.8.20 Debian package on https://deb.torproject.org is now available. And so, as always, please upgrade as soon as possible.
# apt-get --only-upgrade install tor
Reading package lists… Done
Building dependency tree… Done
Reading state information… Done
Suggested packages:
mixmaster torbrowser-launcher socat apparmor-utils nyx obfs4proxy
The following packages will be upgraded:
tor
1 upgraded, 0 newly installed, 0 to remove and 362 not upgraded.
Need to get 2,092 kB of archives.
After this operation, 2,048 B of additional disk space will be used.
Err:1 ^&%(^&%$&)^$%#&(^%$^@( bullseye/main amd64 tor amd64 0.4.8.18-1~d11.bullseye+1
404 Not Found [IP: 95.216.163.36 443]
E: Failed to fetch https: //deb . torproject . org/torproject.org/pool/main/t/tor/tor_0.4.8.18-1~d11.bullseye%2B1_amd64.deb 404 Not Found [IP: 95.216.163.36 443]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
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What am I doing wrong ?
I’m just trying to update like normal sudo apt update sudo apt upgrade .
Or with sudo apt install tor or dpkg -l tor I keep getting told I’m running the latest version - 0.4.8.18 .
Most all the other relays I look at have the same,
“This relay is running a version of Tor that is too old and may be missing important security fixes. If this is your relay, you should update it as soon as possible.”