{"answers":{"affected":"1 open source package ship an affected version, including Kernel.","exploited":"There is no known exploitation of GSD-2021-1000666 in the wild and no public exploit code.","fix":"No fix has been published for GSD-2021-1000666 yet. Limit exposure of the affected software until one is available.","what":"GSD-2021-1000666 is a vulnerability in Kernel, published on 4 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for GSD-2021-1000666 and fix it if it is affected.\n\nWhat it is: GSD-2021-1000666 is a vulnerability in Kernel, published on 4 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of GSD-2021-1000666 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Kernel (Linux): affected all versions; no fix listed\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/GSD-2021-1000666/ (Markdown: https://insights.sbomify.com/GSD-2021-1000666/index.md)","id":"GSD-2021-1000666","markdown":"https://insights.sbomify.com/GSD-2021-1000666/index.md","name":"GSD-2021-1000666","record":{"aliases":[],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"high_privilege","summary":"A speculative execution bypass in the Linux kernel BPF subsystem allows attackers to potentially circumvent security mitigations.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"bpf: No need to simulate speculative domain for immediates\n\nThis is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven.\nThis ID is fixed in Linux Kernel version v4.19.193 by commit a9d5ac78e7ca194d8fc570d26640395ffd6e9367, it was introduced in version  by commit . For more details please see the references link.","ecosystems":["Linux"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":false,"headline":"bpf: No need to simulate speculative domain for immediates","id":"GSD-2021-1000666","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"Linux","product":null,"products":[],"type":"security_feature_bypass","year":"2021"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"Linux","fixed":[],"introduced":[],"last_affected":[],"package":"Kernel","purl":null,"source":"GSD-2021-1000666"}],"products":null,"published":"2021-06-04","related":[],"sources":[{"class":"open","licence":"CC0 1.0","name":"Global Security Database","prefix":"GSD"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":"A speculative execution bypass in the Linux kernel BPF subsystem allows attackers to potentially circumvent security mitigations.","url":"https://insights.sbomify.com/GSD-2021-1000666/"}