CVE-2021-36088

Description

Fluent Bit (aka fluent-bit) 1.7.0 through 1.7.4 has a double free in flb_free (called from flb_parser_json_do and flb_parser_do).

References

• https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-22721
• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33750
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/fluent-bit/OSV-2021-702.yaml
• https://github.com/fluent/fluent-bit/commit/22346a74c07ceb90296be872be2d53eb92252a54
• https://github.com/fluent/fluent-bit/pull/3453