{"api_version":"1","generated_at":"2026-06-11T02:43:37+00:00","cve":"CVE-2026-46283","urls":{"html":"https://cve.report/CVE-2026-46283","api":"https://cve.report/api/cve/CVE-2026-46283.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46283","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46283"},"summary":{"title":"tpm: Use kfree_sensitive() to free auth session in tpm_dev_release()","description":"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->auth, 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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-08 17:16:46","updated_at":"2026-06-08 17:16:46"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/53e6d2d834df40960b655b353e7a8ff4d927e1c7","name":"https://git.kernel.org/stable/c/53e6d2d834df40960b655b353e7a8ff4d927e1c7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dd3ac52ea7a001406c7dbc663aae4b9f89da679a","name":"https://git.kernel.org/stable/c/dd3ac52ea7a001406c7dbc663aae4b9f89da679a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c424d2664f08c77f08b4580b5f0cbaabf7c229b2","name":"https://git.kernel.org/stable/c/c424d2664f08c77f08b4580b5f0cbaabf7c229b2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/84ced03172da544c9f8c0862faad48104f519352","name":"https://git.kernel.org/stable/c/84ced03172da544c9f8c0862faad48104f519352","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46283","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46283","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 699e3efd6c645c741ea4d6d58282c56b6d108cf7 dd3ac52ea7a001406c7dbc663aae4b9f89da679a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 699e3efd6c645c741ea4d6d58282c56b6d108cf7 53e6d2d834df40960b655b353e7a8ff4d927e1c7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 699e3efd6c645c741ea4d6d58282c56b6d108cf7 84ced03172da544c9f8c0862faad48104f519352 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 699e3efd6c645c741ea4d6d58282c56b6d108cf7 c424d2664f08c77f08b4580b5f0cbaabf7c229b2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.10","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.10 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.86 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.27 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.4 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"46283","cve":"CVE-2026-46283","epss":"0.000180000","percentile":"0.047800000","score_date":"2026-06-10","updated_at":"2026-06-11 00:06:41"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/char/tpm/tpm-chip.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"dd3ac52ea7a001406c7dbc663aae4b9f89da679a","status":"affected","version":"699e3efd6c645c741ea4d6d58282c56b6d108cf7","versionType":"git"},{"lessThan":"53e6d2d834df40960b655b353e7a8ff4d927e1c7","status":"affected","version":"699e3efd6c645c741ea4d6d58282c56b6d108cf7","versionType":"git"},{"lessThan":"84ced03172da544c9f8c0862faad48104f519352","status":"affected","version":"699e3efd6c645c741ea4d6d58282c56b6d108cf7","versionType":"git"},{"lessThan":"c424d2664f08c77f08b4580b5f0cbaabf7c229b2","status":"affected","version":"699e3efd6c645c741ea4d6d58282c56b6d108cf7","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/char/tpm/tpm-chip.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.10"},{"lessThan":"6.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.86","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.27","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.86","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.27","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.4","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1-rc1","versionStartIncluding":"6.10","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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->auth, 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."}],"providerMetadata":{"dateUpdated":"2026-06-08T15:41:26.425Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/dd3ac52ea7a001406c7dbc663aae4b9f89da679a"},{"url":"https://git.kernel.org/stable/c/53e6d2d834df40960b655b353e7a8ff4d927e1c7"},{"url":"https://git.kernel.org/stable/c/84ced03172da544c9f8c0862faad48104f519352"},{"url":"https://git.kernel.org/stable/c/c424d2664f08c77f08b4580b5f0cbaabf7c229b2"}],"title":"tpm: Use kfree_sensitive() to free auth session in tpm_dev_release()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46283","datePublished":"2026-06-08T15:41:26.425Z","dateReserved":"2026-05-13T15:03:33.110Z","dateUpdated":"2026-06-08T15:41:26.425Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-08 17:16:46","lastModifiedDate":"2026-06-08 17:16:46","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46283","Ordinal":"1","Title":"tpm: Use kfree_sensitive() to free auth session in tpm_dev_relea","CVE":"CVE-2026-46283","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46283","Ordinal":"1","NoteData":"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->auth, 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.","Type":"Description","Title":"tpm: Use kfree_sensitive() to free auth session in tpm_dev_relea"}]}}}