{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-37805 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-37805 is a medium-severity vulnerability in Linux kernel, published on 8 May 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-2025-37805 and fix it if it is affected.\n\nWhat it is: CVE-2025-37805 is a medium-severity vulnerability in Linux kernel, published on 8 May 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-2025-37805 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-2025-37805/ (Markdown: https://insights.sbomify.com/CVE-2025-37805/index.md)","id":"CVE-2025-37805","markdown":"https://insights.sbomify.com/CVE-2025-37805/index.md","name":"CVE-2025-37805","record":{"aliases":["BELL-CVE-2025-37805","DEBIAN-CVE-2025-37805","GHSA-fg4q-8p94-mj4j","ROOT-OS-DEBIAN-12-CVE-2025-37805","ROOT-OS-UBUNTU-2204-CVE-2025-37805","ROOT-OS-UBUNTU-2404-CVE-2025-37805","UBUNTU-CVE-2025-37805"],"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":"low_privilege","summary":"A flaw in the Linux kernel's virtio sound driver causes a warning and potential crash when cleaning up uninitialized work structures during probe errors.","user_interaction":"not_required","vuln_class":"null_dereference"},"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-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsound/virtio: Fix cancel_sync warnings on uninitialized work_structs\n\nBetty reported hitting the following warning:\n\n[    8.709131][  T221] WARNING: CPU: 2 PID: 221 at kernel/workqueue.c:4182\n...\n[    8.713282][  T221] Call trace:\n[    8.713365][  T221]  __flush_work+0x8d0/0x914\n[    8.713468][  T221]  __cancel_work_sync+0xac/0xfc\n[    8.713570][  T221]  cancel_work_sync+0x24/0x34\n[    8.713667][  T221]  virtsnd_remove+0xa8/0xf8 [virtio_snd ab15f34d0dd772f6d11327e08a81d46dc9c36276]\n[    8.713868][  T221]  virtsnd_probe+0x48c/0x664 [virtio_snd ab15f34d0dd772f6d11327e08a81d46dc9c36276]\n[    8.714035][  T221]  virtio_dev_probe+0x28c/0x390\n[    8.714139][  T221]  really_probe+0x1bc/0x4c8\n...\n\nIt seems we're hitting the error path in virtsnd_probe(), which\ntriggers a virtsnd_remove() which iterates over the substreams\ncalling cancel_work_sync() on the elapsed_period work_struct.\n\nLooking at the code, from earlier in:\nvirtsnd_probe()-\u003evirtsnd_build_devs()-\u003evirtsnd_pcm_parse_cfg()\n\nWe set snd-\u003ensubstreams, allocate the snd-\u003esubstreams, and if\nwe then hit an error on the info allocation or something in\nvirtsnd_ctl_query_info() fails, we will exit without having\ninitialized the elapsed_period work_struct.\n\nWhen that error path unwinds we then call virtsnd_remove()\nwhich as long as the substreams array is allocated, will iterate\nthrough calling cancel_work_sync() on the uninitialized work\nstruct hitting this warning.\n\nTakashi Iwai suggested this fix, which initializes the substreams\nstructure right after allocation, so that if we hit the error\npaths we avoid trying to cleanup uninitialized data.\n\nNote: I have not yet managed to reproduce the issue myself, so\nthis patch has had limited testing.\n\nFeedback or thoughts would be appreciated!","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":"sound/virtio: Fix cancel_sync warnings on uninitialized work_structs","id":"CVE-2025-37805","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"null_dereference","year":"2025"},"n_packages":0,"n_references":6,"next":{"headline":"fs/ntfs3: Keep write operations atomic","id":"CVE-2025-37806"},"packages":[],"prev":{"headline":"This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.","id":"CVE-2025-37804"},"products":["Linux"],"published":"2025-05-08","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":"partial"},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A flaw in the Linux kernel's virtio sound driver causes a warning and potential crash when cleaning up uninitialized work structures during probe errors.","url":"https://insights.sbomify.com/CVE-2025-37805/"}