{"id":"CVE-2026-43180","title":"net: usb: kaweth: remove TX queue manipulation in kaweth_set_rx_mode","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: kaweth: remove TX queue manipulation in kaweth_set_rx_mode\n\nkaweth_set_rx_mode(), the ndo_set_rx_mode callback, calls\nnetif_stop_queue() and netif_wake_queue(…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 443a830b1dc4f85c7560da59d4494b629feee215","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 586318c2730433184c6f1d21183e346ddf25e81d","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a2cd4b4db315a845a5603d08c9d03b11ddfc799d","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < ef9b10a020503888eb6c8ed85a3d901a624ede4c","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9c79b839a63980c7da7ec5db895198045e154112","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < fc393af769af845d9985e2845e49553d8f015a64","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8367c0e90126426e60581e4c07e1ec4411a0f843","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 64868f5ecadeb359a49bc4485bfa7c497047f13a","Linux 2.6.12"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T15:15:22.269207Z"},"published":"2026-05-06","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:20:35.282Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43180","references":[{"url":"https://git.kernel.org/stable/c/443a830b1dc4f85c7560da59d4494b629feee215"},{"url":"https://git.kernel.org/stable/c/586318c2730433184c6f1d21183e346ddf25e81d"},{"url":"https://git.kernel.org/stable/c/a2cd4b4db315a845a5603d08c9d03b11ddfc799d"},{"url":"https://git.kernel.org/stable/c/ef9b10a020503888eb6c8ed85a3d901a624ede4c"},{"url":"https://git.kernel.org/stable/c/9c79b839a63980c7da7ec5db895198045e154112"},{"url":"https://git.kernel.org/stable/c/fc393af769af845d9985e2845e49553d8f015a64"},{"url":"https://git.kernel.org/stable/c/8367c0e90126426e60581e4c07e1ec4411a0f843"},{"url":"https://git.kernel.org/stable/c/64868f5ecadeb359a49bc4485bfa7c497047f13a"}],"tags":["cve.org"],"epss":0.00176,"epssPercentile":0.06649,"ingestedAt":"2026-10-16T17:24:46.686Z","slug":"CVE-2026-43180","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: kaweth: remove TX queue manipulation in kaweth_set_rx_mode\n\nkaweth_set_rx_mode(), the ndo_set_rx_mode callback, calls\nnetif_stop_queue() and netif_wake_queue(). These are TX queue flow\ncontrol functions unrelated to RX multicast configuration.\n\nThe premature netif_wake_queue() can re-enable TX while tx_urb is still\nin-flight, leading to a double usb_submit_urb() on the same URB:\n\nkaweth_start_xmit() {\n    netif_stop_queue();\n    usb_submit_urb(kaweth->tx_urb);\n}\n\nkaweth_set_rx_mode() {\n    netif_stop_queue();\n    netif_wake_queue();             // wakes TX queue before URB is done\n}\n\nkaweth_start_xmit() {\n    netif_stop_queue();\n    usb_submit_urb(kaweth->tx_urb); // URB submitted while active\n}\n\nThis triggers the WARN in usb_submit_urb():\n\n  \"URB submitted while active\"\n\nThis is a similar class of bug fixed in rtl8150 by\n\n- commit 958baf5eaee3 (\"net: usb: Remove disruptive netif_wake_queue in rtl8150_set_multicast\").\n\nAlso kaweth_set_rx_mode() is already functionally broken, the\nreal set_rx_mode action is performed by kaweth_async_set_rx_mode(),\nwhich in turn is not a no-op only at ndo_open() time.\n\n## Affected\n\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 443a830b1dc4f85c7560da59d4494b629feee215`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 586318c2730433184c6f1d21183e346ddf25e81d`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a2cd4b4db315a845a5603d08c9d03b11ddfc799d`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < ef9b10a020503888eb6c8ed85a3d901a624ede4c`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9c79b839a63980c7da7ec5db895198045e154112`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < fc393af769af845d9985e2845e49553d8f015a64`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8367c0e90126426e60581e4c07e1ec4411a0f843`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 64868f5ecadeb359a49bc4485bfa7c497047f13a`\n- `Linux 2.6.12`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}