{"cve":"CVE-2025-21904","nvd":{"published":"2025-04-01T16:15:20.857","modified":"2026-06-17T08:44:34.383","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncaif_virtio: fix wrong pointer check in cfv_probe()\n\ndel_vqs() frees virtqueues, therefore cfv->vq_tx pointer should be checked\nfor NULL before calling it, not cfv->vdev. Also the current implementation\nis redundant because the pointer cfv->vdev is dereferenced before it is\nchecked for NULL.\n\nFix this by checking cfv->vq_tx for NULL instead of cfv->vdev before\ncalling del_vqs().","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-476"],"references":["https://git.kernel.org/stable/c/29e0cd296c87240278e2f7ea4cf3f496b60c03af","https://git.kernel.org/stable/c/56cddf71cce3b15b078e937fadab29962b6f6643","https://git.kernel.org/stable/c/597c27e5f04cb50e56cc9aeda75d3e42b6b89c3e","https://git.kernel.org/stable/c/7b5fe58959822e6cfa884327cabba6be3b01883d","https://git.kernel.org/stable/c/8e4e08ca4cc634b337bb74bc9a70758fdeda0bcb"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:00:28.034033815+00:00"},"epss":{"cve":"CVE-2025-21904","score":0.0023,"percentile":0.13941,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}