{"apiVersion":"1.0","identifier":"CVE-2026-72411","description":"In the Linux kernel, the following vulnerability has been resolved: net: dsa: mxl862xx: fix use-after-free of DSA ports in crc_err_work Upon an MDIO CRC error mxl862xx_crc_err_work_fn() walks the DSA ports and closes the CPU port conduits: dsa_switch_for_each_cpu_port(dp, priv->ds) dev_close(dp->conduit); mxl862xx_remove() unregisters the switch before cancelling this work: set_bit(MXL862XX_FLAG_WORK_STOPPED, &priv->flags); cancel_delayed_work_sync(&priv->stats_work); dsa_unregister_switch(ds); mxl862xx_host_shutdown(priv); dsa_unregister_switch() frees the dsa_port objects. If a CRC error schedules the work during teardown it can run after the ports have been freed and dereference freed memory. Guard the port walk with MXL862XX_FLAG_WORK_STOPPED, which is already set before dsa_unregister_switch(). DSA tears the ports down under rtnl_lock(), so checking the flag under rtnl_lock() means the work either runs before teardown and sees valid ports, or runs afterwards, observes the flag and skips the walk. This mirrors the host_flood_work handler, which skips torn-down ports under rtnl_lock().","publishedAt":"2026-08-15T06:22:14","lastModifiedAt":"2026-08-17T06:19:07","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72411","cvssScore":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00154,"riskScore":0.79,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-72411","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-72411","en":"https://www.redsauce.net/en/cves/CVE-2026-72411","fr":"https://www.redsauce.net/fr/cves/CVE-2026-72411","pt":"https://www.redsauce.net/pt/cves/CVE-2026-72411","de":"https://www.redsauce.net/de/cves/CVE-2026-72411","sk":"https://www.redsauce.net/sk/cves/CVE-2026-72411","el":"https://www.redsauce.net/el/cves/CVE-2026-72411"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-72411"}}