{"id":"CVE-2026-93054","summary":"uio: Fix stale info pointer in failed registration path","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nuio: Fix stale info pointer in failed registration path\n\nAfter device_add(), the UIO device is visible to userspace and /dev/uioX\ncan be opened. If a later setup step fails, __uio_register_device()\nunwinds the device but leaves idev-\u003einfo pointing at the caller-owned\nstruct uio_info.\n\nThat is unsafe when an opener races with the failed registration path.\nThe open file keeps a reference to the uio_device, while the caller sees\nregistration failure and may free its struct uio_info. Later file\noperations can then follow idev-\u003einfo and dereference freed memory.\n\nHandle post-device_add() failures like unregister: remove UIO attributes\nwhile the info pointer is still valid, then clear idev-\u003einfo under\ninfo_lock and wake existing waiters/async users before removing the\ndevice and minor. This makes already-open file descriptors observe the\nsame \"device gone\" state as normal uio_unregister_device().","modified":"2026-11-13T04:02:49.840537180Z","published":"2026-09-17T16:10:43.104Z","related":["SUSE-SU-2026:24550-1","SUSE-SU-2026:24619-1","SUSE-SU-2026:24643-1","SUSE-SU-2026:24648-1","SUSE-SU-2026:24651-1","SUSE-SU-2026:24662-1","SUSE-SU-2026:5091-1","openSUSE-SU-2026:11893-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93054.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/15340b00e665af805523b08515294a1aa1778151"},{"type":"WEB","url":"https://git.kernel.org/stable/c/16695e9059d80ea6661e8399064b0c01f641dd8c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/234156f6c6d9ec35dc47abbcc3adc3c79fc6a5ac"},{"type":"WEB","url":"https://git.kernel.org/stable/c/506b43dde5f9ac0068b1360e6b5dbee07fda59fb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/63eaa7663335d482a8825c231213e312cacea567"},{"type":"WEB","url":"https://git.kernel.org/stable/c/67b6fc084b034a91c3ec7907a3fed89a2450f30b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/df4faf65194ec6c315a59be4c6749eaeb3009243"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ec5bd6731183eb6f619140c9bef2ee11ed818c20"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93054.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93054"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a93e7b331568227500186a465fee3c2cb5dffd1f"},{"fixed":"63eaa7663335d482a8825c231213e312cacea567"},{"fixed":"df4faf65194ec6c315a59be4c6749eaeb3009243"},{"fixed":"506b43dde5f9ac0068b1360e6b5dbee07fda59fb"},{"fixed":"15340b00e665af805523b08515294a1aa1778151"},{"fixed":"234156f6c6d9ec35dc47abbcc3adc3c79fc6a5ac"},{"fixed":"16695e9059d80ea6661e8399064b0c01f641dd8c"},{"fixed":"ec5bd6731183eb6f619140c9bef2ee11ed818c20"},{"fixed":"67b6fc084b034a91c3ec7907a3fed89a2450f30b"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"085d735c858934e5d5bfaedb1fc98bd9135e6ff1"}]}],"versions":["v4.14.336","v4.14.335","v4.14.334","v4.14.333","v4.14.332","v4.14.331","v4.14.330","v4.14.329","v4.14.328","v4.14.327","v4.14.326","v4.14.325","v4.14.324","v4.14.323","v4.14.322","v4.14.321","v4.14.320","v4.14.319","v4.14.318","v4.14.317","v4.14.316","v4.14.315","v4.14.314","v4.14.313","v4.14.312","v4.14.311","v4.14.310","v4.14.309","v4.14.308","v4.14.307","v4.14.306","v4.14.305","v4.14.304","v4.14.303","v4.14.302","v4.14.301","v4.14.300","v4.14.299","v4.14.298","v4.14.297","v4.14.296","v4.14.295","v4.14.294","v4.14.293","v4.14.292","v4.14.291","v4.14.290","v4.14.289","v4.14.288","v4.14.287","v4.14.286","v4.14.285","v4.14.284","v4.14.283","v4.14.282","v4.14.281","v4.14.280","v4.14.279","v4.14.278","v4.14.277","v4.14.276","v4.14.275","v4.14.274","v4.14.273","v4.14.272","v4.14.271","v4.14.270","v4.14.269","v4.14.268","v4.14.267","v4.14.266","v4.14.265","v4.14.264","v4.14.263","v4.14.262","v4.14.261","v4.14.260","v4.14.259","v4.14.258","v4.14.257","v4.14.256","v4.14.255","v4.14.254","v4.14.253","v4.14.252","v4.14.251","v4.14.250","v4.14.249","v4.14.248","v4.14.247","v4.14.246","v4.14.245","v4.14.244","v4.14.243","v4.14.242","v4.14.241","v4.14.240","v4.14.239","v4.14.238","v4.14.237","v4.14.236","v4.14.235","v4.14.234","v4.14.233","v4.14.232","v4.14.231","v4.14.230","v4.14.229","v4.14.228","v4.14.227","v4.14.226","v4.14.225","v4.14.224","v4.14.223","v4.14.222","v4.14.221","v4.14.220","v4.14.219","v4.14.218","v4.14.217","v4.14.216","v4.14.215","v4.14.214","v4.14.213","v4.14.212","v4.14.211","v4.14.210","v4.14.209","v4.14.208","v4.14.207","v4.14.206","v4.14.205","v4.14.204","v4.14.203","v4.14.202","v4.14.201","v4.14.200","v4.14.199","v4.14.198","v4.14.197","v4.14.196","v4.14.195","v4.14.194","v4.14.193","v4.14.192","v4.14.191","v4.14.190","v4.14.189","v4.14.188","v4.14.187","v4.14.186","v4.14.185","v4.14.184","v4.14.183","v4.14.182","v4.14.181","v4.14.180","v4.14.179","v4.14.178","v4.14.177","v4.14.176","v4.14.175","v4.14.174","v4.14.173","v4.14.172","v4.14.171","v4.14.170","v4.14.169","v4.14.168","v4.14.167","v4.14.166","v4.14.165","v4.14.164","v4.14.163","v4.14.162","v4.14.161","v4.14.160","v4.14.159","v4.14.158","v4.14.157","v4.14.156","v4.14.155","v4.14.154","v4.14.153","v4.14.152","v4.14.151","v4.14.150","v4.14.149","v4.14.148","v4.14.147","v4.14.146","v4.14.145","v4.14.144","v4.14.143","v4.14.142","v4.14.141","v4.14.140","v4.14.139","v4.14.138","v4.14.137","v4.14.136","v4.14.135","v4.14.134","v4.14.133","v4.14.132","v4.14.131","v4.14.130","v4.14.129","v4.14.128","v4.14.127","v4.14.126","v4.14.125","v4.14.124","v4.14.123","v4.14.122","v4.14.121","v4.14.120","v4.14.119","v4.14.118","v4.14.117","v4.14.116","v4.14.115","v4.14.114","v4.14.113","v4.14.11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