{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-31532 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-31532 is a high-severity use after free vulnerability in Linux kernel, published on 23 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-2026-31532 and fix it if it is affected.\n\nWhat it is: CVE-2026-31532 is a high-severity use after free vulnerability in Linux kernel, published on 23 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-2026-31532 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-2026-31532/ (Markdown: https://insights.sbomify.com/CVE-2026-31532/index.md)","id":"CVE-2026-31532","markdown":"https://insights.sbomify.com/CVE-2026-31532/index.md","name":"CVE-2026-31532","record":{"aliases":["AZL-83538","BELL-CVE-2026-31532","DEBIAN-CVE-2026-31532","GHSA-7w6x-pfmg-76xx","ROOT-OS-DEBIAN-11-CVE-2026-31532","ROOT-OS-DEBIAN-12-CVE-2026-31532","ROOT-OS-DEBIAN-13-CVE-2026-31532","ROOT-OS-UBUNTU-2204-CVE-2026-31532","ROOT-OS-UBUNTU-2404-CVE-2026-31532","UBUNTU-CVE-2026-31532"],"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","requires_auth":"low_privilege","summary":"A use-after-free in the Linux kernel CAN raw socket implementation allows attackers to potentially execute code or escalate privileges.","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":"cna","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\ncan: raw: fix ro-\u003euniq use-after-free in raw_rcv()\n\nraw_release() unregisters raw CAN receive filters via can_rx_unregister(),\nbut receiver deletion is deferred with call_rcu(). This leaves a window\nwhere raw_rcv() may still be running in an RCU read-side critical section\nafter raw_release() frees ro-\u003euniq, leading to a use-after-free of the\npercpu uniq storage.\n\nMove free_percpu(ro-\u003euniq) out of raw_release() and into a raw-specific\nsocket destructor. can_rx_unregister() takes an extra reference to the\nsocket and only drops it from the RCU callback, so freeing uniq from\nsk_destruct ensures the percpu area is not released until the relevant\ncallbacks have drained.\n\n[mkl: applied manually]","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":"can: raw: fix ro-\u003euniq use-after-free in raw_rcv()","id":"CVE-2026-31532","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":9,"next":{"headline":"net/tls: fix use-after-free in -EBUSY error path of tls_do_encryption","id":"CVE-2026-31533"},"packages":[],"prev":{"headline":"ipv4: nexthop: allocate skb dynamically in rtm_get_nexthop()","id":"CVE-2026-31531"},"products":["Linux"],"published":"2026-04-23","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 CAN raw socket implementation allows attackers to potentially execute code or escalate privileges.","url":"https://insights.sbomify.com/CVE-2026-31532/"}