{"answers":{"affected":"1 open source package ship an affected version, including libcrux-secrets.","exploited":"There is no known exploitation of RUSTSEC-2026-0212 in the wild and no public exploit code.","fix":"Upgrade libcrux-secrets to 0.0.6 or later.","what":"RUSTSEC-2026-0212 is a vulnerability in libcrux-secrets, published on 26 May 2026."},"fix_prompt":"Check this codebase for RUSTSEC-2026-0212 and fix it if it is affected.\n\nWhat it is: RUSTSEC-2026-0212 is a vulnerability in libcrux-secrets, published on 26 May 2026. \nExploitation: There is no known exploitation of RUSTSEC-2026-0212 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- libcrux-secrets (crates.io): affected from 0.0.0-0; fixed in 0.0.6\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/RUSTSEC-2026-0212/ (Markdown: https://insights.sbomify.com/RUSTSEC-2026-0212/index.md)","id":"RUSTSEC-2026-0212","markdown":"https://insights.sbomify.com/RUSTSEC-2026-0212/index.md","name":"RUSTSEC-2026-0212","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["other"],"network_reachable":"unknown","non_default_config":false,"product_category":"Rust constant-time library","requires_auth":"none","summary":"Incorrect constant-time swap/select results on Aarch64 due to register bit leakage, potentially compromising cryptographic security.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"The implementation of constant-time swap and select on aarch64\nplatforms used a `cmp` instruction in inline assembly to check whether\nan 8-bit wide selector was 0. The `cmp` instruction works on 32-bit\nregisters, which included the unspecified high 24 bits of the `cmp` operand.\nDepending on the execution environment the `cmp`\ncould thus potentially return an incorrect result because its\noperand's high bits in the inline assembly were set when Rust expected them to be unset.\nThis could lead to incorrect results for the constant-time swap and select\noperations built from this comparison.\n\n## Impact\nIn certain circumstances the swap and select instructions on aarch64\nplatforms returned incorrect results.\n\n## Mitigation\nStarting from version `0.0.6`, the selector is compared using a `tst`\ninstruction with a mask, which only compares the first 8 bits of the\nselector.","ecosystems":["crates.io"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":true,"headline":"Potentially Incorrect Output of Constant-Time Swap/Select on Aarch64","id":"RUSTSEC-2026-0212","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"other","year":"2026"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"crates.io","fixed":["0.0.6"],"introduced":["0.0.0-0"],"last_affected":[],"package":"libcrux-secrets","purl":"pkg:cargo/libcrux-secrets","source":"RUSTSEC-2026-0212"}],"products":null,"published":"2026-05-26","related":[],"sources":[{"class":"open","licence":"CC0 1.0","name":"RustSec","prefix":"RUSTSEC"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":"Incorrect constant-time swap/select results on Aarch64 due to register bit leakage, potentially compromising cryptographic security.","url":"https://insights.sbomify.com/RUSTSEC-2026-0212/"}