{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-47378 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-47378 is a critical use after free vulnerability in Linux kernel, published on 21 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-47378 and fix it if it is affected.\n\nWhat it is: CVE-2021-47378 is a critical use after free vulnerability in Linux kernel, published on 21 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-47378 in the wild and no public exploit code.\n\nAffected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.\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/CVE-2021-47378/ (Markdown: https://insights.sbomify.com/CVE-2021-47378/index.md)","id":"CVE-2021-47378","markdown":"https://insights.sbomify.com/CVE-2021-47378/index.md","name":"CVE-2021-47378","record":{"aliases":["DEBIAN-CVE-2021-47378","GHSA-7fq3-h5p4-7j98","SUSE-SU-2024:3014-1","SUSE-SU-2024:3021-1","SUSE-SU-2024:3027-1","SUSE-SU-2024:3040-1","UBUNTU-CVE-2021-47378"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A use-after-free vulnerability in the Linux kernel's NVMe RDMA driver allows attackers to potentially execute code or cause a system crash.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-rdma: destroy cm id before destroy qp to avoid use after free\n\nWe should always destroy cm_id before destroy qp to avoid to get cma\nevent after qp was destroyed, which may lead to use after free.\nIn RDMA connection establishment error flow, don't destroy qp in cm\nevent handler.Just report cm_error to upper level, qp will be destroy\nin nvme_rdma_alloc_queue() after destroy cm id.","ecosystems":["SUSE:Linux Enterprise Live Patching 12 SP5"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"nvme-rdma: destroy cm id before destroy qp to avoid use after free","id":"CVE-2021-47378","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"use_after_free","year":"2021"},"n_packages":4,"n_references":3,"next":{"headline":"blk-cgroup: fix UAF by grabbing blkcg lock before destroying blkg pd","id":"CVE-2021-47379"},"packages":[{"ecosystem":"SUSE:Linux Enterprise Live Patching 12 SP5","fixed":["14-2.1"],"introduced":["0"],"last_affected":[],"package":"kgraft-patch-SLE12-SP5_Update_47","purl":"pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_47\u0026distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5","source":"SUSE-SU-2024:3040-1"},{"ecosystem":"SUSE:Linux Enterprise Live Patching 12 SP5","fixed":["13-2.1"],"introduced":["0"],"last_affected":[],"package":"kgraft-patch-SLE12-SP5_Update_48","purl":"pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_48\u0026distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5","source":"SUSE-SU-2024:3021-1"},{"ecosystem":"SUSE:Linux Enterprise Live Patching 12 SP5","fixed":["12-2.1"],"introduced":["0"],"last_affected":[],"package":"kgraft-patch-SLE12-SP5_Update_49","purl":"pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_49\u0026distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5","source":"SUSE-SU-2024:3014-1"},{"ecosystem":"SUSE:Linux Enterprise Live Patching 12 SP5","fixed":["8-2.1"],"introduced":["0"],"last_affected":[],"package":"kgraft-patch-SLE12-SP5_Update_53","purl":"pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_53\u0026distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5","source":"SUSE-SU-2024:3027-1"}],"prev":{"headline":"This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.","id":"CVE-2021-47377"},"products":["Linux"],"published":"2024-05-21","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-05","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel's NVMe RDMA driver allows attackers to potentially execute code or cause a system crash.","url":"https://insights.sbomify.com/CVE-2021-47378/"}