{"id":"CVE-2020-35892","aliases":["EUVD-2021-1553","GHSA-438g-fx34-4h9m","GHSA-hqc8-j86x-2764","RUSTSEC-2020-0039"],"status":"published","title":"Out of bounds read in simple-slab","description":"An issue was discovered in the simple-slab crate before 0.3.3 for Rust. index() allows an out-of-bounds read.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01529,"percentile":0.74909,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125","CWE-193"],"published":"2020-09-03T12:00:00Z","modified":"2026-10-24T10:31:05Z","fixes":[{"ecosystem":"crates.io","package":"simple-slab","fixed_in":["0.3.3"],"sources":["ghsa"]}],"affected":[{"source":"ghsa","ecosystem":"crates.io","package":"simple-slab","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.3.3"}]}]},{"source":"osv","ecosystem":"crates.io","package":"simple-slab","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.3.3"}]}],"bundled":2},{"source":"osv","ecosystem":"crates.io","package":"simple-slab","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.3.3"}]}],"bundled":2},{"source":"osv","ecosystem":"crates.io","package":"simple-slab","ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"},{"fixed":"0.3.3"}]}],"bundled":2}],"products":[{"vendor":"simple-slab_project","product":"simple-slab"}],"references":[{"url":"https://rustsec.org/advisories/RUSTSEC-2020-0039.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-35892","tags":["advisory"]},{"url":"https://github.com/nathansizemore/simple-slab/issues/2","tags":["web","report"]},{"url":"https://github.com/advisories/GHSA-438g-fx34-4h9m"},{"url":"https://github.com/nathansizemore/simple-slab","tags":["package"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-35893","tags":["advisory"]},{"url":"https://github.com/nathansizemore/simple-slab/commit/5e0524c1db836e2192e1cd818848d96937c0b587","tags":["web"]},{"url":"https://crates.io/crates/simple-slab","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2020-35892","description":"An issue was discovered in the simple-slab crate before 0.3.3 for Rust. index() allows an out-of-bounds read.","status":"published","published":"2020-12-31T08:24:18Z","modified":"2024-08-04T17:16:13.185Z","updated_at":"2026-11-02T14:35:57.975444Z"}],"euvd":[{"id":"EUVD-2021-1553","description":"An issue was discovered in the simple-slab crate before 0.3.3 for Rust. index() allows an out-of-bounds read.","status":"published","published":"2020-12-31T08:24:18Z","modified":"2024-08-04T17:16:13Z","updated_at":"2026-11-03T03:07:04.595509Z"}],"ghsa":[{"id":"GHSA-438g-fx34-4h9m","title":"Out of bounds read in simple-slab","description":"An issue was discovered in the simple-slab crate before 0.3.3 for Rust. index() allows an out-of-bounds read.","status":"published","published":"2021-08-25T20:48:38Z","modified":"2023-01-27T05:00:33Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:36:14.825433Z"}],"nvd":[{"id":"CVE-2020-35892","description":"An issue was discovered in the simple-slab crate before 0.3.3 for Rust. index() allows an out-of-bounds read.","status":"published","published":"2020-12-31T10:15:16.847Z","modified":"2026-06-17T03:14:32.913Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:06:28.340168Z"}],"osv":[{"id":"CVE-2020-35892","description":"An issue was discovered in the simple-slab crate before 0.3.3 for Rust. index() allows an out-of-bounds read.","status":"published","published":"2020-12-31T10:15:16.847Z","modified":"2026-10-24T10:30:43.749625628Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:16.612899Z"},{"id":"CVE-2020-35893","description":"An issue was discovered in the simple-slab crate before 0.3.3 for Rust. remove() has an off-by-one error, causing memory leakage and a drop of uninitialized memory.","status":"published","published":"2020-12-31T10:15:16.91Z","modified":"2026-10-24T10:31:05.285712389Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:16.612899Z"},{"id":"GHSA-438g-fx34-4h9m","title":"Out of bounds read in simple-slab","description":"An issue was discovered in the simple-slab crate before 0.3.3 for Rust. index() allows an out-of-bounds read.","status":"published","published":"2021-08-25T20:48:38Z","modified":"2023-11-08T04:03:37.869412Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:46:36.434231Z"},{"id":"GHSA-hqc8-j86x-2764","title":"Off-by-one error in simple-slab","description":"An issue was discovered in the simple-slab crate before 0.3.3 for Rust. remove() has an off-by-one error, causing memory leakage and a drop of uninitialized memory.","status":"published","published":"2021-08-25T20:48:33Z","modified":"2023-11-08T04:03:37.869412Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-193"],"updated_at":"2026-11-02T15:46:49.28217Z"},{"id":"RUSTSEC-2020-0039","title":"`index()` allows out-of-bound read and `remove()` has off-by-one error","description":"`Slab::index()` does not perform the boundary checking, which leads to out-of-bound read access. `Slab::remove()` copies an element from an invalid address due to off-by-one error, resulting in memory leakage and uninitialized memory drop.","status":"published","published":"2020-09-03T12:00:00Z","modified":"2023-11-08T04:03:37.869412Z","updated_at":"2026-11-02T15:53:39.492624Z"}]}}