{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-57843 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-57843 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-57843 is a medium-severity vulnerability in The NetBSD Foundation NetBSD, published on 11 Sep 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-2026-57843 and fix it if it is affected.\n\nWhat it is: CVE-2026-57843 is a medium-severity vulnerability in The NetBSD Foundation NetBSD, published on 11 Sep 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-2026-57843 in the wild and no public exploit code.\n\nAffected product: The NetBSD Foundation NetBSD. 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-2026-57843/ (Markdown: https://insights.sbomify.com/CVE-2026-57843/index.md)","id":"CVE-2026-57843","markdown":"https://insights.sbomify.com/CVE-2026-57843/index.md","name":"CVE-2026-57843","record":{"aliases":["GHSA-p59p-jjhh-5885"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["data_read","security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"NetBSD kernel","requires_auth":"low_privilege","summary":"Unprivileged local users can leak kernel virtual addresses via world-accessible devices, bypassing obfuscation mechanisms to read sensitive kernel structures.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":6.8,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-732","name":"Incorrect Permission Assignment for Critical Resource"}],"description":"NetBSD contains an information disclosure vulnerability in mm_open() within sys/dev/mm.c that allows unprivileged local users to obtain real kernel virtual addresses by opening world-accessible devices such as /dev/null or /dev/zero, which incorrectly receive the PK_KMEM process flag. Attackers can exploit this misconfigured flag to bypass the CANSEE_KPTR obfuscation mechanism and read kernel virtual addresses for sensitive kernel structures including struct proc, kauth_cred, filedesc, and vmspace via sysctl KERN_PROC queries.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"NetBSD mm_open() PK_KMEM Flag Kernel Pointer Information Disclosure","id":"CVE-2026-57843","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.","id":"CVE-2026-57844"},"packages":[],"prev":{"headline":"NetBSD COMPAT_NETBSD32 Double Free / Use-After-Free via recvmsg() msg_iovlen","id":"CVE-2026-57842"},"products":["NetBSD"],"published":"2026-09-11","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"partial"},"state":"PUBLISHED","updated":"2026-10-01","vendors":["The NetBSD Foundation"]},"summary":"Unprivileged local users can leak kernel virtual addresses via world-accessible devices, bypassing obfuscation mechanisms to read sensitive kernel structures.","url":"https://insights.sbomify.com/CVE-2026-57843/"}