{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40126 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40126 is a vulnerability in Linux, published on 12 Nov 2025. 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-2025-40126 and fix it if it is affected.\n\nWhat it is: CVE-2025-40126 is a vulnerability in Linux, published on 12 Nov 2025. 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-2025-40126 in the wild and no public exploit code.\n\nAffected product: Linux. 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-2025-40126/ (Markdown: https://insights.sbomify.com/CVE-2025-40126/index.md)","id":"CVE-2025-40126","markdown":"https://insights.sbomify.com/CVE-2025-40126/index.md","name":"CVE-2025-40126","record":{"aliases":["BELL-CVE-2025-40126","DEBIAN-CVE-2025-40126","GHSA-pgqq-8578-f8gj","ROOT-OS-DEBIAN-11-CVE-2025-40126","ROOT-OS-DEBIAN-13-CVE-2025-40126","ROOT-OS-UBUNTU-2404-CVE-2025-40126","UBUNTU-CVE-2025-40126"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel SPARC","requires_auth":"low_privilege","summary":"A flaw in Linux kernel SPARC copy functions allows local attackers to read uninitialized kernel memory due to incorrect exception handling calculations.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsparc: fix accurate exception reporting in copy_{from_to}_user for UltraSPARC\n\nThe referenced commit introduced exception handlers on user-space memory\nreferences in copy_from_user and copy_to_user. These handlers return from\nthe respective function and calculate the remaining bytes left to copy\nusing the current register contents. This commit fixes a couple of bad\ncalculations. This will fix the return value of copy_from_user and\ncopy_to_user in the faulting case. The behaviour of memcpy stays unchanged.","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":"sparc: fix accurate exception reporting in copy_{from_to}_user for UltraSPARC","id":"CVE-2025-40126","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2025"},"n_packages":0,"n_references":8,"next":{"headline":"hwrng: ks-sa - fix division by zero in ks_sa_rng_init","id":"CVE-2025-40127"},"packages":[],"prev":{"headline":"blk-mq: check kobject state_in_sysfs before deleting in blk_mq_unregister_hctx","id":"CVE-2025-40125"},"products":["Linux"],"published":"2025-11-12","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-23","vendors":["Linux"]},"summary":"A flaw in Linux kernel SPARC copy functions allows local attackers to read uninitialized kernel memory due to incorrect exception handling calculations.","url":"https://insights.sbomify.com/CVE-2025-40126/"}