{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-39999 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-39999 is an use after free vulnerability in Linux, published on 15 Oct 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-2025-39999 and fix it if it is affected.\n\nWhat it is: CVE-2025-39999 is an use after free vulnerability in Linux, published on 15 Oct 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-2025-39999 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-2025-39999/ (Markdown: https://insights.sbomify.com/CVE-2025-39999/index.md)","id":"CVE-2025-39999","markdown":"https://insights.sbomify.com/CVE-2025-39999/index.md","name":"CVE-2025-39999","record":{"aliases":["BELL-CVE-2025-39999","DEBIAN-CVE-2025-39999","GHSA-28j8-2q92-jm59","UBUNTU-CVE-2025-39999"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"high_privilege","summary":"A local attacker with high privileges can trigger a double free in the Linux kernel block layer, causing a system crash.","user_interaction":"not_required","vuln_class":"use_after_free"},"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\nblk-mq: fix blk_mq_tags double free while nr_requests grown\n\nIn the case user trigger tags grow by queue sysfs attribute nr_requests,\nhctx-\u003esched_tags will be freed directly and replaced with a new\nallocated tags, see blk_mq_tag_update_depth().\n\nThe problem is that hctx-\u003esched_tags is from elevator-\u003eet-\u003etags, while\net-\u003etags is still the freed tags, hence later elevator exit will try to\nfree the tags again, causing kernel panic.\n\nFix this problem by replacing et-\u003etags with new allocated tags as well.\n\nNoted there are still some long term problems that will require some\nrefactor to be fixed thoroughly[1].\n\n[1] https://lore.kernel.org/all/20250815080216.410665-1-yukuai1@huaweicloud.com/","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":"blk-mq: fix blk_mq_tags double free while nr_requests grown","id":"CVE-2025-39999","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2025"},"n_packages":0,"n_references":3,"next":{"headline":"wifi: rtw89: fix use-after-free in rtw89_core_tx_kick_off_and_wait()","id":"CVE-2025-40000"},"packages":[],"prev":{"headline":"scsi: target: target_core_configfs: Add length check to avoid buffer overflow","id":"CVE-2025-39998"},"products":["Linux"],"published":"2025-10-15","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 local attacker with high privileges can trigger a double free in the Linux kernel block layer, causing a system crash.","url":"https://insights.sbomify.com/CVE-2025-39999/"}