{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-31582 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-31582 is a high-severity use after free vulnerability in Linux kernel, published on 24 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-2026-31582 and fix it if it is affected.\n\nWhat it is: CVE-2026-31582 is a high-severity use after free vulnerability in Linux kernel, published on 24 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-2026-31582 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-2026-31582/ (Markdown: https://insights.sbomify.com/CVE-2026-31582/index.md)","id":"CVE-2026-31582","markdown":"https://insights.sbomify.com/CVE-2026-31582/index.md","name":"CVE-2026-31582","record":{"aliases":["BELL-CVE-2026-31582","DEBIAN-CVE-2026-31582","GHSA-7v66-mw99-f72x","ROOT-OS-UBUNTU-2404-CVE-2026-31582","UBUNTU-CVE-2026-31582"],"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 driver","requires_auth":"low_privilege","summary":"A use-after-free vulnerability in the Linux kernel powerz driver allows attackers to cause denial of service or execute code via USB disconnect events.","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":"nvd","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-416","name":"Use After Free"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (powerz) Fix use-after-free on USB disconnect\n\nAfter powerz_disconnect() frees the URB and releases the mutex, a\nsubsequent powerz_read() call can acquire the mutex and call\npowerz_read_data(), which dereferences the freed URB pointer.\n\nFix by:\n - Setting priv-\u003eurb to NULL in powerz_disconnect() so that\n   powerz_read_data() can detect the disconnected state.\n - Adding a !priv-\u003eurb check at the start of powerz_read_data()\n   to return -ENODEV on a disconnected device.\n - Moving usb_set_intfdata() before hwmon registration so the\n   disconnect handler can always find the priv pointer.","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":"hwmon: (powerz) Fix use-after-free on USB disconnect","id":"CVE-2026-31582","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":"media: em28xx: fix use-after-free in em28xx_v4l2_open()","id":"CVE-2026-31583"},"packages":[],"prev":{"headline":"ALSA: 6fire: fix use-after-free on disconnect","id":"CVE-2026-31581"},"products":["Linux"],"published":"2026-04-24","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":"2026-06-14","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel powerz driver allows attackers to cause denial of service or execute code via USB disconnect events.","url":"https://insights.sbomify.com/CVE-2026-31582/"}