{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-23134 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-23134 is a medium-severity vulnerability in Linux kernel, published on 16 Apr 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-2025-23134 and fix it if it is affected.\n\nWhat it is: CVE-2025-23134 is a medium-severity vulnerability in Linux kernel, published on 16 Apr 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-2025-23134 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-2025-23134/ (Markdown: https://insights.sbomify.com/CVE-2025-23134/index.md)","id":"CVE-2025-23134","markdown":"https://insights.sbomify.com/CVE-2025-23134/index.md","name":"CVE-2025-23134","record":{"aliases":["BELL-CVE-2025-23134","DEBIAN-CVE-2025-23134","GHSA-gxg5-6xg7-gc7q","UBUNTU-CVE-2025-23134"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel ALSA","requires_auth":"low_privilege","summary":"A locking error in the Linux kernel ALSA timer subsystem can cause deadlocks, leading to a denial of service.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":5.5,"severity":"medium","source":"cisa-adp","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-667","name":"Improper Locking"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: timer: Don't take register_mutex with copy_from/to_user()\n\nThe infamous mmap_lock taken in copy_from/to_user() can be often\nproblematic when it's called inside another mutex, as they might lead\nto deadlocks.\n\nIn the case of ALSA timer code, the bad pattern is with\nguard(mutex)(\u0026register_mutex) that covers copy_from/to_user() -- which\nwas mistakenly introduced at converting to guard(), and it had been\ncarefully worked around in the past.\n\nThis patch fixes those pieces simply by moving copy_from/to_user() out\nof the register mutex lock again.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-09-20","github_poc":1,"max_poc_stars":1,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-09-20T03:00:09Z","kind":"github_poc","ref":"https://github.com/thrilokh-q123/CVE-2025-23134_fixes_code","stars":1,"title":"The ASN1_STRING_set() function takes an `int` length, make sure the argument is not inadvertently truncated when it is called from asn1_ex_c2i()."}],"tier":"poc_unverified"},"has_fix":true,"headline":"ALSA: timer: Don't take register_mutex with copy_from/to_user()","id":"CVE-2025-23134","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"race_condition","year":"2025"},"n_packages":0,"n_references":4,"next":{"headline":"RISC-V: KVM: Teardown riscv specific bits after kvm_exit","id":"CVE-2025-23135"},"packages":[],"prev":{"headline":"wifi: ath11k: update channel list in reg notifier instead reg worker","id":"CVE-2025-23133"},"products":["Linux"],"published":"2025-04-16","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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A locking error in the Linux kernel ALSA timer subsystem can cause deadlocks, leading to a denial of service.","url":"https://insights.sbomify.com/CVE-2025-23134/"}