tor: tor before 0.4.9.9 was prone to an out-of-bounds write when parsing a consensus or detached signature with unexpecte...
CVE-2026-77642 is fixed in tor on 1 platform, first by DEBIAN-CVE-2026-77642, released August 21, 2026. It is not reported as exploited. Patch Radar priority: Urgent.
tor before 0.4.9.9 was prone to an out-of-bounds write when parsing a consensus or detached signature with unexpected signature digest type. Impact is minor for most Tor roles, but potentially major for directory authorities. This is TROVE-2026-019.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| tor · Debian 12.15 (bookworm) | 0.4.9.9-1 | DEBIAN-CVE-2026-77642 | Aug 21, 2026 |
| tor · Debian 13.5 (trixie) | 0.4.9.11-0+deb13u1 | DEBIAN-CVE-2026-77642 | Aug 21, 2026 |
| tor · Debian 14 | 0.4.9.9-1 | DEBIAN-CVE-2026-77642 | Aug 21, 2026 |
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