Security update for tor
This security update for Tor addresses multiple vulnerabilities and bugs across several versions, including fixes for memory comparison errors that could cause remote crashes, out-of-bounds read errors, and defense-in-depth security issues. The updates also include improvements to flow control, compatibility fixes, and hardening compiler flags. The vendor strongly recommends upgrading to these fixed versions to mitigate the identified issues.
AI Analysis
Technical Summary
The update for Tor includes a series of fixes spanning versions 0.4.8.19 through 0.4.8.23. Key fixes include resolving a memory compare error that could lead to remote crashes when using the conflux subsystem, correcting out-of-bounds read errors with V1-formatted EXTEND cells, and addressing multiple defense-in-depth security issues throughout the codebase. Additional improvements involve flow control performance, compatibility with LibreSSL relays, and the addition of compiler hardening flags. The update also regenerates fallback directories and updates geoip files to maintain accurate IP location data. These cumulative fixes address both stability and security concerns, with a strong recommendation from the vendor to upgrade promptly.
Potential Impact
The vulnerabilities fixed could lead to remote crashes and potential mishandling of memory, which may affect the stability and security of Tor relays and clients. Defense-in-depth issues addressed reduce the risk of exploitation through subtle code weaknesses. The fixes improve overall robustness and reliability of the Tor network components. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Upgrade to Tor version 0.4.8.23 or later, which includes all the listed fixes and improvements. The vendor strongly recommends applying this update as soon as possible to mitigate the identified issues. No additional mitigations are specified beyond applying the update.
Security update for tor
Description
This security update for Tor addresses multiple vulnerabilities and bugs across several versions, including fixes for memory comparison errors that could cause remote crashes, out-of-bounds read errors, and defense-in-depth security issues. The updates also include improvements to flow control, compatibility fixes, and hardening compiler flags. The vendor strongly recommends upgrading to these fixed versions to mitigate the identified issues.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The update for Tor includes a series of fixes spanning versions 0.4.8.19 through 0.4.8.23. Key fixes include resolving a memory compare error that could lead to remote crashes when using the conflux subsystem, correcting out-of-bounds read errors with V1-formatted EXTEND cells, and addressing multiple defense-in-depth security issues throughout the codebase. Additional improvements involve flow control performance, compatibility with LibreSSL relays, and the addition of compiler hardening flags. The update also regenerates fallback directories and updates geoip files to maintain accurate IP location data. These cumulative fixes address both stability and security concerns, with a strong recommendation from the vendor to upgrade promptly.
Potential Impact
The vulnerabilities fixed could lead to remote crashes and potential mishandling of memory, which may affect the stability and security of Tor relays and clients. Defense-in-depth issues addressed reduce the risk of exploitation through subtle code weaknesses. The fixes improve overall robustness and reliability of the Tor network components. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Upgrade to Tor version 0.4.8.23 or later, which includes all the listed fixes and improvements. The vendor strongly recommends applying this update as soon as possible to mitigate the identified issues. No additional mitigations are specified beyond applying the update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- SUSE Product Security Team
- Advisory Id
- openSUSE-SU-2026:20589-1
- Cve Count
- 0
Threat ID: 6aab4a4a55bf5e2cf59ae3ab
Added to database: 09/17/2026, 02:02:50 UTC
Last enriched: 09/17/2026, 02:17:05 UTC
Last updated: 09/17/2026, 04:14:17 UTC
Views: 6
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