{"id":"CVE-2021-45685","aliases":["EUVD-2022-0547","GHSA-9mp7-45qh-r8j8","GHSA-cxcc-q839-2cw9","RUSTSEC-2021-0087"],"status":"published","title":"columnar: Read on uninitialized buffer may cause UB (ColumnarReadExt::read_typed_vec())","description":"An issue was discovered in the columnar crate through 2021-01-07 for Rust. ColumnarReadExt::read_typed_vec may read from uninitialized memory locations.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.0123,"percentile":0.69189,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-908"],"published":"2021-01-07T12:00:00Z","modified":"2026-06-17T04:13:56Z","fixes":[{"ecosystem":"crates.io","package":"columnar","fixed_in":["0.1.0"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"crates.io","package":"columnar","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.0.19"}]}]},{"source":"ghsa","ecosystem":"crates.io","package":"columnar","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.0.19"}]}]},{"source":"osv","ecosystem":"crates.io","package":"columnar","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"0.0.19"}]}]},{"source":"osv","ecosystem":"crates.io","package":"columnar","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"0.0.19"}]}]},{"source":"osv","ecosystem":"crates.io","package":"columnar","ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"},{"fixed":"0.1.0"}]}]}],"products":[{"vendor":"columnar_project","product":"columnar"}],"references":[{"url":"https://rustsec.org/advisories/RUSTSEC-2021-0087.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","web","advisory"]},{"url":"https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/columnar/RUSTSEC-2021-0087.md","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-45685","tags":["advisory"]},{"url":"https://github.com/frankmcsherry/columnar/issues/6","tags":["web","report"]},{"url":"https://github.com/advisories/GHSA-9mp7-45qh-r8j8"},{"url":"https://github.com/advisories/GHSA-cxcc-q839-2cw9"},{"url":"https://github.com/frankmcsherry/columnar.git","tags":["package"]},{"url":"https://github.com/frankmcsherry/columnar","tags":["package"]},{"url":"https://crates.io/crates/columnar","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-45685","description":"An issue was discovered in the columnar crate through 2021-01-07 for Rust. ColumnarReadExt::read_typed_vec may read from uninitialized memory locations.","status":"published","published":"2021-12-26T21:52:16Z","modified":"2024-08-04T04:47:01.957Z","updated_at":"2026-11-02T14:33:02.20241Z"}],"euvd":[{"id":"EUVD-2022-0547","description":"An issue was discovered in the columnar crate through 2021-01-07 for Rust. ColumnarReadExt::read_typed_vec may read from uninitialized memory locations.","status":"published","published":"2021-12-26T21:52:16Z","modified":"2024-08-04T04:47:01Z","updated_at":"2026-11-03T03:08:26.364792Z"}],"ghsa":[{"id":"GHSA-9mp7-45qh-r8j8","title":"columnar: Read on uninitialized buffer may cause UB (ColumnarReadExt::read_typed_vec())","description":"Affected versions of this crate passes an uninitialized buffer to a user-provided Read implementation (ColumnarReadExt::read_typed_vec()).\n\nArbitrary Read implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer. Reading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.","status":"published","published":"2022-01-06T22:13:46Z","modified":"2023-06-13T17:04:59Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-908"],"updated_at":"2026-11-02T14:36:53.654352Z"},{"id":"GHSA-cxcc-q839-2cw9","title":"columnar: `Read` on uninitialized buffer may cause UB (ColumnarReadExt::read_typed_vec())","description":"Affected versions of this crate passes an uninitialized buffer to a user-provided `Read` implementation (`ColumnarReadExt::read_typed_vec()`).\nArbitrary `Read` implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer.\nReading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.\n","status":"published","published":"2022-06-16T23:48:53Z","modified":"2023-06-13T17:06:59Z","updated_at":"2026-11-02T14:36:53.654352Z"}],"nvd":[{"id":"CVE-2021-45685","description":"An issue was discovered in the columnar crate through 2021-01-07 for Rust. ColumnarReadExt::read_typed_vec may read from uninitialized memory locations.","status":"published","published":"2021-12-27T00:15:09.037Z","modified":"2026-06-17T04:13:56.71Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-908"],"updated_at":"2026-11-02T14:07:02.977492Z"}],"osv":[{"id":"GHSA-9mp7-45qh-r8j8","title":"columnar: Read on uninitialized buffer may cause UB (ColumnarReadExt::read_typed_vec())","description":"Affected versions of this crate passes an uninitialized buffer to a user-provided Read implementation (ColumnarReadExt::read_typed_vec()).\n\nArbitrary Read implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer. Reading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.","status":"published","published":"2022-01-06T22:13:46Z","modified":"2023-11-08T04:07:21.739936Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-908"],"updated_at":"2026-11-02T15:46:43.875515Z"},{"id":"GHSA-cxcc-q839-2cw9","title":"columnar: `Read` on uninitialized buffer may cause UB (ColumnarReadExt::read_typed_vec())","description":"Affected versions of this crate passes an uninitialized buffer to a user-provided `Read` implementation (`ColumnarReadExt::read_typed_vec()`).\nArbitrary `Read` implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer.\nReading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.\n","status":"published","published":"2022-06-16T23:48:53Z","modified":"2023-11-08T04:07:21.739936Z","updated_at":"2026-11-02T15:46:45.639885Z"},{"id":"RUSTSEC-2021-0087","title":"columnar: `Read` on uninitialized buffer may cause UB (ColumnarReadExt::read_typed_vec())","description":"Affected versions of this crate passes an uninitialized buffer to a user-provided `Read` implementation (`ColumnarReadExt::read_typed_vec()`).\n\nArbitrary `Read` implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer.\nReading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.","status":"published","published":"2021-01-07T12:00:00Z","modified":"2025-02-01T00:07:11Z","updated_at":"2026-11-02T15:53:39.492624Z"}]}}