1.31.4 (December 8, 2024)

Minor behavior changes

Changes that may cause incompatibilities for some users, but should not for most

• dns: Patched c-ares to address CVE-2024-25629.

Bug fixes

Changes expected to improve the state of the world and are unlikely to have negative effects

• access_log: Relaxed the restriction on SNI logging to allow the _ character, even if envoy.reloadable_features.sanitize_sni_in_access_log is enabled.

• tracers: Avoid possible overflow when setting span attributes in Dynatrace sampler.

• validation/tools: Add back missing extension for schema_validator_tool.