{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74698","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-15T05:44:03.927Z","datePublished":"2026-08-22T15:32:59.703Z","dateUpdated":"2026-08-22T15:32:59.703Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-22T15:32:59.703Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: fix BQL reset on SQ re-activation\n\nmlx5e_queue_start() deactivates and re-activates all channels but closes\nonly the queue being restarted. mlx5e_activate_txqsq() then\nunconditionally calls netdev_tx_reset_queue(), zeroing the BQL counters\nof channels that kept their in-flight TX WQEs. The next completion then\nover-charges and trips the BUG_ON() in dql_completed():\n\n  kernel BUG at lib/dynamic_queue_limits.c:99!\n  RIP: 0010:dql_completed+0x23d/0x280\n  Call Trace:\n   <IRQ>\n   mlx5e_poll_tx_cq+0x668/0xa60\n   mlx5e_napi_poll+0x5b/0x7b0\n   net_rx_action+0x15a/0x580\n\nReset BQL only when the SQ has no bytes in flight (sq->cc == sq->pc).\n\nIn the case that reset is skipped, the outstanding WQEs will eventually\ncomplete and rebalance the dql. The dql->limit is carried across the\nreset."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/en_main.c"],"versions":[{"version":"b2588ea40ec9472688289c1a644627c0f4a1f33f","lessThan":"88664c48d7d1eca8e1ac92da85c89c26af741cf1","status":"affected","versionType":"git"},{"version":"b2588ea40ec9472688289c1a644627c0f4a1f33f","lessThan":"d2897717cd222e575599d903d885c48602699800","status":"affected","versionType":"git"},{"version":"b2588ea40ec9472688289c1a644627c0f4a1f33f","lessThan":"e7386770be1bf810bcd6af39d1e4bfeab3408430","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/en_main.c"],"versions":[{"version":"6.17","status":"affected"},{"version":"0","lessThan":"6.17","status":"unaffected","versionType":"semver"},{"version":"6.18.45","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.9","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"6.18.45"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"7.1.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/88664c48d7d1eca8e1ac92da85c89c26af741cf1"},{"url":"https://git.kernel.org/stable/c/d2897717cd222e575599d903d885c48602699800"},{"url":"https://git.kernel.org/stable/c/e7386770be1bf810bcd6af39d1e4bfeab3408430"}],"title":"net/mlx5e: fix BQL reset on SQ re-activation","x_generator":{"engine":"bippy-1.2.0"}}}}