{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90334","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-11T19:38:34.803Z","datePublished":"2026-09-17T16:08:47.462Z","dateUpdated":"2026-09-17T16:08:47.462Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-17T16:08:47.462Z"},"descriptions":[{"lang":"en","value":"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tty/tty_io.c"],"versions":[{"version":"c1a752ba2d6b8a52879c7ab637cff38359ea9827","lessThan":"fb1de260033c215dba438973d82b48562bdc86bb","status":"affected","versionType":"git"},{"version":"c1a752ba2d6b8a52879c7ab637cff38359ea9827","lessThan":"e9e64dd02fd68776afda00777591eca0c3984285","status":"affected","versionType":"git"},{"version":"c1a752ba2d6b8a52879c7ab637cff38359ea9827","lessThan":"33a44333a9dfda044b0e233399b12ead7f8a90ae","status":"affected","versionType":"git"},{"version":"c1a752ba2d6b8a52879c7ab637cff38359ea9827","lessThan":"d331c63570af61ef7aaf516b64a8d6f47518a3a4","status":"affected","versionType":"git"},{"version":"c1a752ba2d6b8a52879c7ab637cff38359ea9827","lessThan":"a83fcddf3c75d004f12aa13555bb73da19fb75a9","status":"affected","versionType":"git"},{"version":"c1a752ba2d6b8a52879c7ab637cff38359ea9827","lessThan":"4f6bd79bb7e55095f09bec9b4eb6c09df1306116","status":"affected","versionType":"git"},{"version":"c1a752ba2d6b8a52879c7ab637cff38359ea9827","lessThan":"5c5a795bf6248fe96f96dd9fd79d66bbb4a92077","status":"affected","versionType":"git"},{"version":"c1a752ba2d6b8a52879c7ab637cff38359ea9827","lessThan":"6645856f0df3aeecd45519cb611415b4b89c2223","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/tty/tty_io.c"],"versions":[{"version":"4.3","status":"affected"},{"version":"0","lessThan":"4.3","status":"unaffected","versionType":"semver"},{"version":"5.10.270","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.221","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.188","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.157","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.110","lessThanOrEqual":"6.12.*","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":"4.3","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"7.3-rc1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/fb1de260033c215dba438973d82b48562bdc86bb"},{"url":"https://git.kernel.org/stable/c/e9e64dd02fd68776afda00777591eca0c3984285"},{"url":"https://git.kernel.org/stable/c/33a44333a9dfda044b0e233399b12ead7f8a90ae"},{"url":"https://git.kernel.org/stable/c/d331c63570af61ef7aaf516b64a8d6f47518a3a4"},{"url":"https://git.kernel.org/stable/c/a83fcddf3c75d004f12aa13555bb73da19fb75a9"},{"url":"https://git.kernel.org/stable/c/4f6bd79bb7e55095f09bec9b4eb6c09df1306116"},{"url":"https://git.kernel.org/stable/c/5c5a795bf6248fe96f96dd9fd79d66bbb4a92077"},{"url":"https://git.kernel.org/stable/c/6645856f0df3aeecd45519cb611415b4b89c2223"}],"title":"tty: clear cdev pointer after cdev_add() failure","x_generator":{"engine":"bippy-1.2.0"}}}}