{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-31408 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-31408 is a high-severity use after free vulnerability in Linux kernel, published on 6 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-2026-31408 and fix it if it is affected.\n\nWhat it is: CVE-2026-31408 is a high-severity use after free vulnerability in Linux kernel, published on 6 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-2026-31408 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-2026-31408/ (Markdown: https://insights.sbomify.com/CVE-2026-31408/index.md)","id":"CVE-2026-31408","markdown":"https://insights.sbomify.com/CVE-2026-31408/index.md","name":"CVE-2026-31408","record":{"aliases":["AZL-81870","BELL-CVE-2026-31408","DEBIAN-CVE-2026-31408","GHSA-82h6-xw4j-pq2m","ROOT-OS-DEBIAN-11-CVE-2026-31408","ROOT-OS-DEBIAN-12-CVE-2026-31408","ROOT-OS-DEBIAN-13-CVE-2026-31408","ROOT-OS-UBUNTU-2204-CVE-2026-31408","ROOT-OS-UBUNTU-2404-CVE-2026-31408","UBUNTU-CVE-2026-31408"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel Bluetooth","requires_auth":"none","summary":"A use-after-free in the Linux kernel Bluetooth SCO module allows attackers to execute arbitrary code or escalate privileges via concurrent socket operations.","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":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:A/AC:L/PR:N/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\nBluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold\n\nsco_recv_frame() reads conn-\u003esk under sco_conn_lock() but immediately\nreleases the lock without holding a reference to the socket. A concurrent\nclose() can free the socket between the lock release and the subsequent\nsk-\u003esk_state access, resulting in a use-after-free.\n\nOther functions in the same file (sco_sock_timeout(), sco_conn_del())\ncorrectly use sco_sock_hold() to safely hold a reference under the lock.\n\nFix by using sco_sock_hold() to take a reference before releasing the\nlock, and adding sock_put() on all exit paths.","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":"Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold","id":"CVE-2026-31408","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":8,"next":{"headline":"ksmbd: unset conn-\u003ebinding on failed binding request","id":"CVE-2026-31409"},"packages":[],"prev":{"headline":"netfilter: conntrack: add missing netlink policy validations","id":"CVE-2026-31407"},"products":["Linux"],"published":"2026-04-06","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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A use-after-free in the Linux kernel Bluetooth SCO module allows attackers to execute arbitrary code or escalate privileges via concurrent socket operations.","url":"https://insights.sbomify.com/CVE-2026-31408/"}