{"id":"CVE-2026-23258","title":"net: liquidio: Initialize netdev pointer before queue setup","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: liquidio: Initialize netdev pointer before queue setup\n\nIn setup_nic_devices(), the netdev is allocated using alloc_etherdev_mq().\nHowever, the pointer to this str…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= c33c997346c34ea7b89aec99524ad9632a2f1e0c < be109646cdaecab262f6276303b1763468c94378","Linux >= c33c997346c34ea7b89aec99524ad9632a2f1e0c < c81a8515fb8c8fb5d0dbc21f48337494bf1d60df","Linux >= c33c997346c34ea7b89aec99524ad9632a2f1e0c < a0e57c0b68c9e6f9a8fd7c1167861a5a730eb2f4","Linux >= c33c997346c34ea7b89aec99524ad9632a2f1e0c < c0ed6c77ec34050971fd0df2a94dfdea66d09331","Linux >= c33c997346c34ea7b89aec99524ad9632a2f1e0c < 1d4590fde856cb94bd9a46e795c29d8288c238fc","Linux >= c33c997346c34ea7b89aec99524ad9632a2f1e0c < d028147ae06407cb355245db1774793600670169","Linux >= c33c997346c34ea7b89aec99524ad9632a2f1e0c < 926ede0c85e1e57c97d64d9612455267d597bb2c","Linux 4.18"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T21:24:00.119604Z"},"published":"2026-03-18","updated":"2026-11-05","sourceUpdated":"2026-11-05T21:33:33.848Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-23258","references":[{"url":"https://git.kernel.org/stable/c/be109646cdaecab262f6276303b1763468c94378"},{"url":"https://git.kernel.org/stable/c/c81a8515fb8c8fb5d0dbc21f48337494bf1d60df"},{"url":"https://git.kernel.org/stable/c/a0e57c0b68c9e6f9a8fd7c1167861a5a730eb2f4"},{"url":"https://git.kernel.org/stable/c/c0ed6c77ec34050971fd0df2a94dfdea66d09331"},{"url":"https://git.kernel.org/stable/c/1d4590fde856cb94bd9a46e795c29d8288c238fc"},{"url":"https://git.kernel.org/stable/c/d028147ae06407cb355245db1774793600670169"},{"url":"https://git.kernel.org/stable/c/926ede0c85e1e57c97d64d9612455267d597bb2c"}],"tags":["cve.org"],"epss":0.00121,"epssPercentile":0.01939,"ingestedAt":"2026-11-05T22:38:32.105Z","slug":"CVE-2026-23258","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: liquidio: Initialize netdev pointer before queue setup\n\nIn setup_nic_devices(), the netdev is allocated using alloc_etherdev_mq().\nHowever, the pointer to this structure is stored in oct->props[i].netdev\nonly after the calls to netif_set_real_num_rx_queues() and\nnetif_set_real_num_tx_queues().\n\nIf either of these functions fails, setup_nic_devices() returns an error\nwithout freeing the allocated netdev. Since oct->props[i].netdev is still\nNULL at this point, the cleanup function liquidio_destroy_nic_device()\nwill fail to find and free the netdev, resulting in a memory leak.\n\nFix this by initializing oct->props[i].netdev before calling the queue\nsetup functions. This ensures that the netdev is properly accessible for\ncleanup in case of errors.\n\nCompile tested only. Issue found using a prototype static analysis tool\nand code review.\n\n## Affected\n\n- `Linux >= c33c997346c34ea7b89aec99524ad9632a2f1e0c < be109646cdaecab262f6276303b1763468c94378`\n- `Linux >= c33c997346c34ea7b89aec99524ad9632a2f1e0c < c81a8515fb8c8fb5d0dbc21f48337494bf1d60df`\n- `Linux >= c33c997346c34ea7b89aec99524ad9632a2f1e0c < a0e57c0b68c9e6f9a8fd7c1167861a5a730eb2f4`\n- `Linux >= c33c997346c34ea7b89aec99524ad9632a2f1e0c < c0ed6c77ec34050971fd0df2a94dfdea66d09331`\n- `Linux >= c33c997346c34ea7b89aec99524ad9632a2f1e0c < 1d4590fde856cb94bd9a46e795c29d8288c238fc`\n- `Linux >= c33c997346c34ea7b89aec99524ad9632a2f1e0c < d028147ae06407cb355245db1774793600670169`\n- `Linux >= c33c997346c34ea7b89aec99524ad9632a2f1e0c < 926ede0c85e1e57c97d64d9612455267d597bb2c`\n- `Linux 4.18`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}