{"id":"CVE-2026-90334","revision":"dfba113928d84a0181e3f3b4bea050a8","records":[{"revision":"dfba113928d84a0181e3f3b4bea050a8","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90334","aliases":[],"title":"tty: clear cdev pointer after cdev_add() failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntty: clear cdev pointer after cdev_add() failure\n\ntty_cdev_add() drops the cdev reference when cdev_add() fails, but\nleaves driver->cdevs[index] pointing to freed memory.\ntty_unregister_device() later passes that stale pointer to cdev_del(),\ncausing a use-after-free.\n\nClear the slot after dropping the reference.","state":0,"publishedAt":"2026-09-17T16:08:47.462+00:00","modifiedAt":"2026-10-19T09:01:51.379+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/tty/tty_io.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"c1a752ba2d6b8a52879c7ab637cff38359ea9827\",\n                            \"lessThan\": \"fb1de260033c215dba438973d82b48562bdc86bb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c1a752ba2d6b8a52879c7ab637cff38359ea9827\",\n                            \"lessThan\": \"e9e64dd02fd68776afda00777591eca0c3984285\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c1a752ba2d6b8a52879c7ab637cff38359ea9827\",\n                            \"lessThan\": \"33a44333a9dfda044b0e233399b12ead7f8a90ae\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c1a752ba2d6b8a52879c7ab637cff38359ea9827\",\n                            \"lessThan\": \"d331c63570af61ef7aaf516b64a8d6f47518a3a4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c1a752ba2d6b8a52879c7ab637cff38359ea9827\",\n                            \"lessThan\": \"a83fcddf3c75d004f12aa13555bb73da19fb75a9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c1a752ba2d6b8a52879c7ab637cff38359ea9827\",\n                            \"lessThan\": \"4f6bd79bb7e55095f09bec9b4eb6c09df1306116\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c1a752ba2d6b8a52879c7ab637cff38359ea9827\",\n                            \"lessThan\": \"5c5a795bf6248fe96f96dd9fd79d66bbb4a92077\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c1a752ba2d6b8a52879c7ab637cff38359ea9827\",\n                            \"lessThan\": \"6645856f0df3aeecd45519cb611415b4b89c2223\",\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/tty/tty_io.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.3\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\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/fb1de260033c215dba438973d82b48562bdc86bb","https://git.kernel.org/stable/c/e9e64dd02fd68776afda00777591eca0c3984285","https://git.kernel.org/stable/c/33a44333a9dfda044b0e233399b12ead7f8a90ae","https://git.kernel.org/stable/c/d331c63570af61ef7aaf516b64a8d6f47518a3a4","https://git.kernel.org/stable/c/a83fcddf3c75d004f12aa13555bb73da19fb75a9","https://git.kernel.org/stable/c/4f6bd79bb7e55095f09bec9b4eb6c09df1306116","https://git.kernel.org/stable/c/5c5a795bf6248fe96f96dd9fd79d66bbb4a92077","https://git.kernel.org/stable/c/6645856f0df3aeecd45519cb611415b4b89c2223"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90334","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90334","identifiers":["CVE-2026-90334"]},"retained":false,"historicalAffected":[]}],"coverage":[]}