{"answers":{"affected":"1 open source package ship an affected version, including Kernel.","exploited":"There is no known exploitation of GSD-2021-1000667 in the wild and no public exploit code.","fix":"No fix has been published for GSD-2021-1000667 yet. Limit exposure of the affected software until one is available.","what":"GSD-2021-1000667 is a vulnerability in Kernel, published on 4 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for GSD-2021-1000667 and fix it if it is affected.\n\nWhat it is: GSD-2021-1000667 is a vulnerability in Kernel, published on 4 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of GSD-2021-1000667 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-2021-1000667/ (Markdown: https://insights.sbomify.com/GSD-2021-1000667/index.md)","id":"GSD-2021-1000667","markdown":"https://insights.sbomify.com/GSD-2021-1000667/index.md","name":"GSD-2021-1000667","record":{"aliases":[],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux Kernel NFS","requires_auth":"none","summary":"A NULL pointer dereference in the Linux Kernel NFSv4 subsystem allows remote attackers to cause a denial of service.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()\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 39785761feadf261bc5101372b0b0bbaf6a94494, it was introduced in version v4.19.191 by commit 9ffa7967f9379a0a1b924e9ffeda709d72237da7. 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":"NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()","id":"GSD-2021-1000667","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"Linux","product":null,"products":[],"type":"null_dereference","year":"2021"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"Linux","fixed":[],"introduced":[],"last_affected":[],"package":"Kernel","purl":null,"source":"GSD-2021-1000667"}],"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 NULL pointer dereference in the Linux Kernel NFSv4 subsystem allows remote attackers to cause a denial of service.","url":"https://insights.sbomify.com/GSD-2021-1000667/"}