Description
Tor 0.4.7.x before 0.4.7.8 allows a denial of service via the wedging of RTT estimation.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | tor | 0.4.7.8-1 | — |
| Debian 13 | tor | 0.4.7.8-1 | — |
| Debian 12 | tor | 0.4.7.8-1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP4 | tor | 0.4.7.8-bp154.2.3.1 | openSUSE-SU-2022:10023-1 |
| SUSE Package Hub 15 SP3 | tor | 0.4.7.8-bp154.2.3.1 | openSUSE-SU-2022:10023-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | tor | 0.4.7.8-1.1 | openSUSE-SU-2024:12149-1 |
| openSUSE Leap 15.4 | tor | 0.4.7.8-bp154.2.3.1 | openSUSE-SU-2022:10023-1 |
| openSUSE Leap 15.3 | tor | 0.4.7.8-bp154.2.3.1 | openSUSE-SU-2022:10023-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | tor | 0.4.7.8-r0 | — |
| Alpine v3.23 | tor | 0.4.7.8-r0 | — |
| Alpine v3.22 | tor | 0.4.7.8-r0 | — |
| Alpine v3.21 | tor | 0.4.7.8-r0 | — |
| Alpine v3.20 | tor | 0.4.7.8-r0 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | tor | 0.4.7.8-r0 | — |
| Alpine v3.18 | tor | 0.4.7.8-r0 | — |
| Alpine v3.17 | tor | 0.4.7.8-r0 | — |
| Alpine v3.16 | tor | 0.4.7.8-r0 | — |
Advisories 2
- openSUSE-SU-2024:12149-1 tor-0.4.7.8-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2022:10023-1 Security update for tor SUSE / openSUSE Security Updates · May 7, 2025