{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90113","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-11T19:38:34.787Z","datePublished":"2026-09-17T16:06:20.070Z","dateUpdated":"2026-09-17T16:06:20.070Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-17T16:06:20.070Z"},"descriptions":[{"lang":"en","value":"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/netdevsim/netdev.c"],"versions":[{"version":"5bc8e8dbef27b73bd7b6d1fd5108b4fd4c6d469f","lessThan":"b8f32b0804b4bf0cba0ee0a093e3fd74f11d7166","status":"affected","versionType":"git"},{"version":"5bc8e8dbef27b73bd7b6d1fd5108b4fd4c6d469f","lessThan":"db038ac4dca0fa626199e9c297eddd8362be0550","status":"affected","versionType":"git"},{"version":"5bc8e8dbef27b73bd7b6d1fd5108b4fd4c6d469f","lessThan":"07e98a4d5e9c292eae97c9cc5ab0937384e48492","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/netdevsim/netdev.c"],"versions":[{"version":"6.14","status":"affected"},{"version":"0","lessThan":"6.14","status":"unaffected","versionType":"semver"},{"version":"6.18.52","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.6","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc1","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":"6.14","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.3-rc1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/b8f32b0804b4bf0cba0ee0a093e3fd74f11d7166"},{"url":"https://git.kernel.org/stable/c/db038ac4dca0fa626199e9c297eddd8362be0550"},{"url":"https://git.kernel.org/stable/c/07e98a4d5e9c292eae97c9cc5ab0937384e48492"}],"title":"netdevsim: update queue NAPI association on queue reset","x_generator":{"engine":"bippy-1.2.0"}}}}