{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-43129 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-43129 is a medium-severity 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-2026-43129 and fix it if it is affected.\n\nWhat it is: CVE-2026-43129 is a medium-severity 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-2026-43129 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-2026-43129/ (Markdown: https://insights.sbomify.com/CVE-2026-43129/index.md)","id":"CVE-2026-43129","markdown":"https://insights.sbomify.com/CVE-2026-43129/index.md","name":"CVE-2026-43129","record":{"aliases":["AZL-85848","BELL-CVE-2026-43129","DEBIAN-CVE-2026-43129","GHSA-rphf-w922-p2vc","ROOT-OS-DEBIAN-11-CVE-2026-43129","ROOT-OS-DEBIAN-12-CVE-2026-43129","ROOT-OS-UBUNTU-2204-CVE-2026-43129","ROOT-OS-UBUNTU-2404-CVE-2026-43129","UBUNTU-CVE-2026-43129"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A local attacker with kexec privileges can cause a kernel page fault and denial of service by booting a second-stage kernel with restricted memory.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nima: verify the previous kernel's IMA buffer lies in addressable RAM\n\nPatch series \"Address page fault in ima_restore_measurement_list()\", v3.\n\nWhen the second-stage kernel is booted via kexec with a limiting command\nline such as \"mem=\u003csize\u003e\" we observe a pafe fault that happens.\n\n    BUG: unable to handle page fault for address: ffff97793ff47000\n    RIP: ima_restore_measurement_list+0xdc/0x45a\n    #PF: error_code(0x0000)  not-present page\n\nThis happens on x86_64 only, as this is already fixed in aarch64 in\ncommit: cbf9c4b9617b (\"of: check previous kernel's ima-kexec-buffer\nagainst memory bounds\")\n\nThis patch (of 3):\n\nWhen the second-stage kernel is booted with a limiting command line (e.g. \n\"mem=\u003csize\u003e\"), the IMA measurement buffer handed over from the previous\nkernel may fall outside the addressable RAM of the new kernel.  Accessing\nsuch a buffer can fault during early restore.\n\nIntroduce a small generic helper, ima_validate_range(), which verifies\nthat a physical [start, end] range for the previous-kernel IMA buffer lies\nwithin addressable memory:\n\t- On x86, use pfn_range_is_mapped().\n\t- On OF based architectures, use page_is_ram().","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":"ima: verify the previous kernel's IMA buffer lies in addressable RAM","id":"CVE-2026-43129","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"null_dereference","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"iommu/vt-d: Flush dev-IOTLB only when PCIe device is accessible in scalable mode","id":"CVE-2026-43130"},"packages":[],"prev":{"headline":"RDMA/umem: Fix double dma_buf_unpin in failure path","id":"CVE-2026-43128"},"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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-06-19","vendors":["Linux"]},"summary":"A local attacker with kexec privileges can cause a kernel page fault and denial of service by booting a second-stage kernel with restricted memory.","url":"https://insights.sbomify.com/CVE-2026-43129/"}