{"apiVersion":"1.0","identifier":"CVE-2026-74698","description":"In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: fix BQL reset on SQ re-activation mlx5e_queue_start() deactivates and re-activates all channels but closes only the queue being restarted. mlx5e_activate_txqsq() then unconditionally calls netdev_tx_reset_queue(), zeroing the BQL counters of channels that kept their in-flight TX WQEs. The next completion then over-charges and trips the BUG_ON() in dql_completed(): kernel BUG at lib/dynamic_queue_limits.c:99! RIP: 0010:dql_completed+0x23d/0x280 Call Trace: <IRQ> mlx5e_poll_tx_cq+0x668/0xa60 mlx5e_napi_poll+0x5b/0x7b0 net_rx_action+0x15a/0x580 Reset BQL only when the SQ has no bytes in flight (sq->cc == sq->pc). In the case that reset is skipped, the outstanding WQEs will eventually complete and rebalance the dql. The dql->limit is carried across the reset.","publishedAt":"2026-08-22T16:16:44","lastModifiedAt":"2026-08-22T16:16:44","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74698","cvssScore":null,"cvssVector":"Pending","epssProbability":0.00166,"riskScore":0,"affectedProduct":"linux","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74698","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74698","en":"https://www.redsauce.net/en/cves/CVE-2026-74698","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74698","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74698","de":"https://www.redsauce.net/de/cves/CVE-2026-74698","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74698","el":"https://www.redsauce.net/el/cves/CVE-2026-74698"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74698"}}