{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-43120 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-43120 is a high-severity use after free vulnerability in Linux kernel, published on 6 May 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-43120 and fix it if it is affected.\n\nWhat it is: CVE-2026-43120 is a high-severity use after free vulnerability in Linux kernel, published on 6 May 2026. 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 CVE-2026-43120 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-2026-43120/ (Markdown: https://insights.sbomify.com/CVE-2026-43120/index.md)","id":"CVE-2026-43120","markdown":"https://insights.sbomify.com/CVE-2026-43120/index.md","name":"CVE-2026-43120","record":{"aliases":["BELL-CVE-2026-43120","DEBIAN-CVE-2026-43120","GHSA-74jp-62v9-rvjf","ROOT-OS-DEBIAN-11-CVE-2026-43120","ROOT-OS-DEBIAN-12-CVE-2026-43120","ROOT-OS-UBUNTU-2204-CVE-2026-43120","ROOT-OS-UBUNTU-2404-CVE-2026-43120","UBUNTU-CVE-2026-43120"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel RDMA driver","requires_auth":"low_privilege","summary":"A double free vulnerability in the Linux kernel's irdma RDMA driver allows attackers to cause denial of service or potentially execute code via memory corruption.","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":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-415","name":"Double Free"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Fix double free related to rereg_user_mr\n\nIf IB_MR_REREG_TRANS is set during rereg_user_mr, the\numem will be released and a new one will be allocated\nin irdma_rereg_mr_trans. If any step of irdma_rereg_mr_trans\nfails after the new umem is allocated, it releases the umem,\nbut does not set iwmr-\u003eregion to NULL. The problem is that\nthis failure is propagated to the user, who will then call\nibv_dereg_mr (as they should). Then, the dereg_mr path will\nsee a non-NULL umem and attempt to call ib_umem_release again.\n\nFix this by setting iwmr-\u003eregion to NULL after ib_umem_release.\n\nFixed: 5ac388db27c4 (\"RDMA/irdma: Add support to re-register a memory region\")","ecosystems":[],"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":"RDMA/irdma: Fix double free related to rereg_user_mr","id":"CVE-2026-43120","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"io_uring/zcrx: fix user_ref race between scrub and refill paths","id":"CVE-2026-43121"},"packages":[],"prev":{"headline":"Bluetooth: hci_sync: annotate data-races around hdev-\u003ereq_status","id":"CVE-2026-43119"},"products":["Linux"],"published":"2026-05-06","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":"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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A double free vulnerability in the Linux kernel's irdma RDMA driver allows attackers to cause denial of service or potentially execute code via memory corruption.","url":"https://insights.sbomify.com/CVE-2026-43120/"}