{"apiVersion":"1.0","identifier":"CVE-2026-72113","description":"In the Linux kernel, the following vulnerability has been resolved: can: bcm: add missing device refcount for CAN filter removal sashiko-bot remarked a problem with a concurrent device unregistration in isotp.c which also is present in the bcm.c code. A former fix for raw.c commit c275a176e4b6 (-can: raw: add missing refcount for memory leak fix-) introduced a netdevice_tracker which solves the issue for bcm.c too. bcm_release(), bcm_delete_rx_op() and bcm_notifier() relied on dev_get_by_index(ifindex) to re-find the device for an rx_op before unregistering its filter. If a concurrent NETDEV_UNREGISTER has already unlisted the device from the ifindex table, that lookup fails and can_rx_unregister() is silently skipped, leaving a stale CAN filter pointing at the soon-to-be-freed bcm_op/socket. Hold a netdev_hold()/netdev_put() tracked reference on op->rx_reg_dev from the moment the rx filter is registered in bcm_rx_setup() until it is unregistered in bcm_rx_unreg(), and use that reference directly in bcm_release() and bcm_delete_rx_op() instead of re-looking the device up by ifindex.","publishedAt":"2026-08-15T06:21:25","lastModifiedAt":"2026-08-19T17:20:57","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72113","cvssScore":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00164,"riskScore":0.79,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-72113","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-72113","en":"https://www.redsauce.net/en/cves/CVE-2026-72113","fr":"https://www.redsauce.net/fr/cves/CVE-2026-72113","pt":"https://www.redsauce.net/pt/cves/CVE-2026-72113","de":"https://www.redsauce.net/de/cves/CVE-2026-72113","sk":"https://www.redsauce.net/sk/cves/CVE-2026-72113","el":"https://www.redsauce.net/el/cves/CVE-2026-72113"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-72113"}}