CVE-2026-64537

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> bridge: cfm: reject invalid CCM interval at configuration time<br /> <br /> ccm_tx_work_expired() re-arms itself via queue_delayed_work() using<br /> the configured exp_interval converted by interval_to_us(). When<br /> exp_interval is BR_CFM_CCM_INTERVAL_NONE or out of range,<br /> interval_to_us() returns 0, causing the worker to fire immediately in<br /> a tight loop that allocates skbs until OOM.<br /> <br /> Fix this by validating exp_interval at configuration time:<br /> <br /> - Constrain IFLA_BRIDGE_CFM_CC_CONFIG_EXP_INTERVAL to the valid range<br /> [BR_CFM_CCM_INTERVAL_3_3_MS, BR_CFM_CCM_INTERVAL_10_MIN] in the<br /> netlink policy so userspace cannot set an invalid value.<br /> <br /> - Reject starting CCM TX in br_cfm_cc_ccm_tx() when exp_interval has<br /> not yet been configured (defaults to 0 from kzalloc).