{"id":"CVE-2020-36446","aliases":["EUVD-2021-1532","GHSA-36cg-4jff-5863","GHSA-8892-84wf-cg8f","RUSTSEC-2020-0126"],"status":"published","title":"Data races in signal-simple","description":"An issue was discovered in the signal-simple crate through 2020-11-15 for Rust. There are unconditional implementations of Send and Sync for SyncChannel\u003cT\u003e.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00766,"percentile":0.55903,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119","CWE-362"],"published":"2020-11-15T12:00:00Z","modified":"2026-06-17T03:15:30Z","affected":[{"source":"ghsa","ecosystem":"crates.io","package":"signal-simple","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.1.1"}]}]},{"source":"ghsa","ecosystem":"crates.io","package":"signal-simple","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.1.1"}]}]},{"source":"osv","ecosystem":"crates.io","package":"signal-simple","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"0.1.1"}]}]},{"source":"osv","ecosystem":"crates.io","package":"signal-simple","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"0.1.1"}]}]},{"source":"osv","ecosystem":"crates.io","package":"signal-simple","ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"}]}]}],"products":[{"vendor":"signal-simple_project","product":"signal-simple"}],"references":[{"url":"https://rustsec.org/advisories/RUSTSEC-2020-0126.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","web","advisory"]},{"url":"https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/signal-simple/RUSTSEC-2020-0126.md","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-36446","tags":["advisory"]},{"url":"https://github.com/kitsuneninetails/signal-rust/issues/2","tags":["web","report"]},{"url":"https://github.com/advisories/GHSA-36cg-4jff-5863"},{"url":"https://github.com/advisories/GHSA-8892-84wf-cg8f"},{"url":"http://github.com/kitsuneninetails/signal-rust","tags":["package"]},{"url":"https://github.com/kitsuneninetails/signal-rust","tags":["web"]},{"url":"https://crates.io/crates/signal-simple","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2020-36446","description":"An issue was discovered in the signal-simple crate through 2020-11-15 for Rust. There are unconditional implementations of Send and Sync for SyncChannel\u003cT\u003e.","status":"published","published":"2021-08-08T05:16:50Z","modified":"2024-08-04T17:30:08.043Z","updated_at":"2026-11-02T14:35:55.128961Z"}],"euvd":[{"id":"EUVD-2021-1532","description":"An issue was discovered in the signal-simple crate through 2020-11-15 for Rust. There are unconditional implementations of Send and Sync for SyncChannel\u003cT\u003e.","status":"published","published":"2021-08-08T05:16:50Z","modified":"2024-08-04T17:30:08Z","updated_at":"2026-11-03T03:07:03.010139Z"}],"ghsa":[{"id":"GHSA-36cg-4jff-5863","title":"Data races in signal-simple","description":"Affected versions of this crate unconditionally implement Send/Sync for SyncChannel\u003cT\u003e. SyncChannel\u003cT\u003e doesn't provide access to \u0026T but merely serves as a channel that consumes and returns owned T.\n\nUsers can create UB in safe Rust by sending T: !Send to other threads with SyncChannel::send/recv APIs. Using T = Arc\u003cCell\u003c_\u003e allows to create data races (which can lead to memory corruption), and using T = MutexGuard\u003cT\u003e allows to unlock a mutex from a thread that didn't lock the mutex.","status":"published","published":"2021-08-25T20:59:13Z","modified":"2023-06-13T20:41:14Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-119","CWE-362"],"updated_at":"2026-11-02T14:36:54.225318Z"},{"id":"GHSA-8892-84wf-cg8f","title":"SyncChannel\u003cT\u003e can move 'T: !Send' to other threads","description":"Affected versions of this crate unconditionally implement Send/Sync for `SyncChannel\u003cT\u003e`. `SyncChannel\u003cT\u003e` doesn't provide access to `\u0026T` but merely serves as a channel that consumes and returns owned `T`. Users can create UB in safe Rust by sending `T: !Send` to other threads with `SyncChannel::send/recv` APIs. Using `T = Arc\u003cCell\u003c_\u003e` allows to create data races (which can lead to memory corruption), and using `T = MutexGuard\u003cT\u003e` allows to unlock a mutex from a thread that didn't lock the mutex.\n","status":"published","published":"2021-08-25T21:00:16Z","modified":"2023-06-13T21:01:57Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-362"],"updated_at":"2026-11-02T14:36:54.225318Z"}],"nvd":[{"id":"CVE-2020-36446","description":"An issue was discovered in the signal-simple crate through 2020-11-15 for Rust. There are unconditional implementations of Send and Sync for SyncChannel\u003cT\u003e.","status":"published","published":"2021-08-08T06:15:07.35Z","modified":"2026-06-17T03:15:30.573Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-362"],"updated_at":"2026-11-02T14:06:44.292752Z"}],"osv":[{"id":"GHSA-36cg-4jff-5863","title":"Data races in signal-simple","description":"Affected versions of this crate unconditionally implement Send/Sync for SyncChannel\u003cT\u003e. SyncChannel\u003cT\u003e doesn't provide access to \u0026T but merely serves as a channel that consumes and returns owned T.\n\nUsers can create UB in safe Rust by sending T: !Send to other threads with SyncChannel::send/recv APIs. Using T = Arc\u003cCell\u003c_\u003e allows to create data races (which can lead to memory corruption), and using T = MutexGuard\u003cT\u003e allows to unlock a mutex from a thread that didn't lock the mutex.","status":"published","published":"2021-08-25T20:59:13Z","modified":"2023-11-08T04:03:45.337562Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-119","CWE-362"],"updated_at":"2026-11-02T15:46:35.406455Z"},{"id":"GHSA-8892-84wf-cg8f","title":"SyncChannel\u003cT\u003e can move 'T: !Send' to other threads","description":"Affected versions of this crate unconditionally implement Send/Sync for `SyncChannel\u003cT\u003e`. `SyncChannel\u003cT\u003e` doesn't provide access to `\u0026T` but merely serves as a channel that consumes and returns owned `T`. Users can create UB in safe Rust by sending `T: !Send` to other threads with `SyncChannel::send/recv` APIs. Using `T = Arc\u003cCell\u003c_\u003e` allows to create data races (which can lead to memory corruption), and using `T = MutexGuard\u003cT\u003e` allows to unlock a mutex from a thread that didn't lock the mutex.\n","status":"published","published":"2021-08-25T21:00:16Z","modified":"2023-11-08T04:03:45.337562Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-362"],"updated_at":"2026-11-02T15:46:42.077781Z"},{"id":"RUSTSEC-2020-0126","title":"SyncChannel\u003cT\u003e can move 'T: !Send' to other threads","description":"Affected versions of this crate unconditionally implement Send/Sync for `SyncChannel\u003cT\u003e`.\n`SyncChannel\u003cT\u003e` doesn't provide access to `\u0026T` but merely serves as a channel that consumes and returns owned `T`.\n\nUsers can create UB in safe Rust by sending `T: !Send` to other threads with `SyncChannel::send/recv` APIs. Using `T = Arc\u003cCell\u003c_\u003e` allows to create data races (which can lead to memory corruption), and using `T = MutexGuard\u003cT\u003e` allows to unlock a mutex from a thread that didn't lock the mutex.","status":"published","published":"2020-11-15T12:00:00Z","modified":"2023-11-08T04:03:45.337562Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:39.492624Z"}]}}