{"id":"CVE-2026-90113","revision":"6531ae76c812476eafba5ec7f3ab27bf","records":[{"revision":"6531ae76c812476eafba5ec7f3ab27bf","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90113","aliases":[],"title":"netdevsim: update queue NAPI association on queue reset","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetdevsim: update queue NAPI association on queue reset\n\nIn netdevsim, receive queues (struct nsim_rq) embed their own struct\nnapi_struct. When queue reset is performed (e.g. via queue_reset\ndebugfs), nsim_queue_start() swaps in a newly allocated struct nsim_rq,\nand nsim_queue_mem_free() later deletes and frees the old one.\n\nHowever, nsim_queue_start() failed to update the queue-to-NAPI mapping\nvia netif_queue_set_napi(). As a result, dev->_rx[idx].napi continued to\npoint to the old NAPI struct. After the old queue was freed, a subsequent\nqueue dump via Netlink (NETDEV_CMD_QUEUE_GET) triggered a KASAN\nslab-use-after-free read in nla_put_napi_id() when accessing\nrxq->napi->napi_id.\n\nFix this by calling netif_queue_set_napi() in nsim_queue_start() to\nassociate the new NAPI with the RX queue, and clear the association\nwith netif_queue_set_napi(..., NULL) in nsim_del_napi() during teardown.","state":0,"publishedAt":"2026-09-17T16:06:20.07+00:00","modifiedAt":"2026-10-19T08:58:11.732+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/netdevsim/netdev.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5bc8e8dbef27b73bd7b6d1fd5108b4fd4c6d469f\",\n                            \"lessThan\": \"b8f32b0804b4bf0cba0ee0a093e3fd74f11d7166\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5bc8e8dbef27b73bd7b6d1fd5108b4fd4c6d469f\",\n                            \"lessThan\": \"db038ac4dca0fa626199e9c297eddd8362be0550\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5bc8e8dbef27b73bd7b6d1fd5108b4fd4c6d469f\",\n                            \"lessThan\": \"07e98a4d5e9c292eae97c9cc5ab0937384e48492\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/netdevsim/netdev.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.14\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.14\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/b8f32b0804b4bf0cba0ee0a093e3fd74f11d7166","https://git.kernel.org/stable/c/db038ac4dca0fa626199e9c297eddd8362be0550","https://git.kernel.org/stable/c/07e98a4d5e9c292eae97c9cc5ab0937384e48492"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90113","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90113","identifiers":["CVE-2026-90113"]},"retained":false,"historicalAffected":[]}],"coverage":[]}