{"apiVersion":"1.0","identifier":"CVE-2026-72115","description":"In the Linux kernel, the following vulnerability has been resolved: can: bcm: track a single source interface for ANYDEV timeout/throttle ops An ANYDEV rx op (ifindex == 0) with an active RX timeout and/or throttle timer has no defined semantics when matching frames arrive from several interfaces: bcm_rx_handler() can run concurrently for the same op on different CPUs, racing hrtimer_cancel()/ bcm_rx_starttimer() against bcm_rx_timeout_handler() and causing spurious RX_TIMEOUT notifications and last_frames corruption. The same concurrency lets throttled multiplex frames from different interfaces clobber the single rx_ifindex/rx_stamp fields shared by the op. Add op->if_detected to track the first interface that delivers a matching frame while a timeout/throttle timer is configured, and reject frames from any other interface for that op. The claim is decided in bcm_rx_handler() before hrtimer_cancel() touches op->timer, so a rejected frame can never disturb the claimed interface-s watchdog. RTR-mode ops are excluded via RX_RTR_FRAME, independent of kt_ival1/kt_ival2, since those may briefly hold a stale value from an earlier non-RTR configuration. The claim is released in bcm_notify() on NETDEV_UNREGISTER and in bcm_rx_setup() when SETTIMER reconfigures the timer values. A (re-)claim is only possible on CAN devices in NETREG_REGISTERED dev->reg_state to cover the release in bcm_notify() where reg_state becomes NETREG_UNREGISTERING until synchronize_net().","publishedAt":"2026-08-15T06:21:25","lastModifiedAt":"2026-08-19T17:20:57","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72115","cvssScore":8.1,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","epssProbability":0.00295,"riskScore":0.83,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-72115","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-72115","en":"https://www.redsauce.net/en/cves/CVE-2026-72115","fr":"https://www.redsauce.net/fr/cves/CVE-2026-72115","pt":"https://www.redsauce.net/pt/cves/CVE-2026-72115","de":"https://www.redsauce.net/de/cves/CVE-2026-72115","sk":"https://www.redsauce.net/sk/cves/CVE-2026-72115","el":"https://www.redsauce.net/el/cves/CVE-2026-72115"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-72115"}}