{"id":"CVE-2026-46283","summary":"tpm: Use kfree_sensitive() to free auth session in tpm_dev_release()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ntpm: Use kfree_sensitive() to free auth session in tpm_dev_release()\n\ntpm_dev_release() uses plain kfree() to free chip-\u003eauth, which contains\nsensitive cryptographic material including HMAC session keys, nonces,\nand passphrase data (struct tpm2_auth).\n\nEvery other code path that frees this structure uses kfree_sensitive()\nto zero the memory before releasing it: both tpm2_end_auth_session()\nand tpm_buf_check_hmac_response() do so. The tpm_dev_release() path\nis the only one that does not, leaving key material in freed slab\nmemory until it is eventually overwritten.\n\nUse kfree_sensitive() for consistency with the rest of the driver and\nto ensure session keys are scrubbed during device teardown.","modified":"2026-06-18T03:56:04.413506514Z","published":"2026-06-08T15:41:26.425Z","related":["openSUSE-SU-2026:11014-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46283.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/53e6d2d834df40960b655b353e7a8ff4d927e1c7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/84ced03172da544c9f8c0862faad48104f519352"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c424d2664f08c77f08b4580b5f0cbaabf7c229b2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dd3ac52ea7a001406c7dbc663aae4b9f89da679a"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46283.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46283"},{"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":"699e3efd6c645c741ea4d6d58282c56b6d108cf7"},{"fixed":"dd3ac52ea7a001406c7dbc663aae4b9f89da679a"},{"fixed":"53e6d2d834df40960b655b353e7a8ff4d927e1c7"},{"fixed":"84ced03172da544c9f8c0862faad48104f519352"},{"fixed":"c424d2664f08c77f08b4580b5f0cbaabf7c229b2"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46283.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.10.0"},{"fixed":"6.12.86"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.27"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46283.json"}}],"schema_version":"1.7.5"}