{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-31689 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-31689 is a medium-severity vulnerability in Linux kernel, published on 27 Apr 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-2026-31689 and fix it if it is affected.\n\nWhat it is: CVE-2026-31689 is a medium-severity vulnerability in Linux kernel, published on 27 Apr 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-2026-31689 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-2026-31689/ (Markdown: https://insights.sbomify.com/CVE-2026-31689/index.md)","id":"CVE-2026-31689","markdown":"https://insights.sbomify.com/CVE-2026-31689/index.md","name":"CVE-2026-31689","record":{"aliases":["AZL-84404","BELL-CVE-2026-31689","DEBIAN-CVE-2026-31689","GHSA-9qrw-cmg5-g8vq","ROOT-OS-DEBIAN-12-CVE-2026-31689","ROOT-OS-UBUNTU-2404-CVE-2026-31689","UBUNTU-CVE-2026-31689"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel EDAC","requires_auth":"low_privilege","summary":"A null pointer dereference in the Linux kernel EDAC subsystem causes a system crash when memory allocation fails during initialization.","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":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nEDAC/mc: Fix error path ordering in edac_mc_alloc()\n\nWhen the mci-\u003epvt_info allocation in edac_mc_alloc() fails, the error path\nwill call put_device() which will end up calling the device's release\nfunction.\n\nHowever, the init ordering is wrong such that device_initialize() happens\n*after* the failed allocation and thus the device itself and the release\nfunction pointer are not initialized yet when they're called:\n\n  MCE: In-kernel MCE decoding enabled.\n  ------------[ cut here ]------------\n  kobject: '(null)': is not initialized, yet kobject_put() is being called.\n  WARNING: lib/kobject.c:734 at kobject_put, CPU#22: systemd-udevd\n  CPU: 22 UID: 0 PID: 538 Comm: systemd-udevd Not tainted 7.0.0-rc1+ #2 PREEMPT(full)\n  RIP: 0010:kobject_put\n  Call Trace:\n   \u003cTASK\u003e\n   edac_mc_alloc+0xbe/0xe0 [edac_core]\n   amd64_edac_init+0x7a4/0xff0 [amd64_edac]\n   ? __pfx_amd64_edac_init+0x10/0x10 [amd64_edac]\n   do_one_initcall\n   ...\n\nReorder the calling sequence so that the device is initialized and thus the\nrelease function pointer is properly set before it can be used.\n\nThis was found by Claude while reviewing another EDAC patch.","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":"EDAC/mc: Fix error path ordering in edac_mc_alloc()","id":"CVE-2026-31689","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":6,"next":{"headline":"firmware: thead: Fix buffer overflow and use standard endian macros","id":"CVE-2026-31690"},"packages":[],"prev":{"headline":"This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.","id":"CVE-2026-31688"},"products":["Linux"],"published":"2026-04-27","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A null pointer dereference in the Linux kernel EDAC subsystem causes a system crash when memory allocation fails during initialization.","url":"https://insights.sbomify.com/CVE-2026-31689/"}