CVE-2026-46283

{"id": "CVE-2026-46283", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "699e3efd6c645c741ea4d6d58282c56b6d108cf7", "lessThan": "dd3ac52ea7a001406c7dbc663aae4b9f89da679a", "versionType": "git"}, {"status": "affected", "version": "699e3efd6c645c741ea4d6d58282c56b6d108cf7", "lessThan": "53e6d2d834df40960b655b353e7a8ff4d927e1c7", "versionType": "git"}, {"status": "affected", "version": "699e3efd6c645c741ea4d6d58282c56b6d108cf7", "lessThan": "84ced03172da544c9f8c0862faad48104f519352", "versionType": "git"}, {"status": "affected", "version": "699e3efd6c645c741ea4d6d58282c56b6d108cf7", "lessThan": "c424d2664f08c77f08b4580b5f0cbaabf7c229b2", "versionType": "git"}], "programFiles": ["drivers/char/tpm/tpm-chip.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.10"}, {"status": "unaffected", "version": "0", "lessThan": "6.10", "versionType": "semver"}, {"status": "unaffected", "version": "6.12.86", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.27", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.4", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/char/tpm/tpm-chip.c"], "defaultStatus": "affected"}]}], "published": "2026-06-08T17:16:46.063", "references": [{"url": "https://git.kernel.org/stable/c/53e6d2d834df40960b655b353e7a8ff4d927e1c7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/84ced03172da544c9f8c0862faad48104f519352", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c424d2664f08c77f08b4580b5f0cbaabf7c229b2", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/dd3ac52ea7a001406c7dbc663aae4b9f89da679a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "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."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ntpm: Usar kfree_sensitive() para liberar la sesi\u00f3n de autenticaci\u00f3n en tpm_dev_release()\n\ntpm_dev_release() usa kfree() sin m\u00e1s para liberar chip->auth, que contiene material criptogr\u00e1fico sensible, incluyendo claves de sesi\u00f3n HMAC, nonces y datos de frase de contrase\u00f1a (estructura tpm2_auth).\n\nTodas las dem\u00e1s rutas de c\u00f3digo que liberan esta estructura usan kfree_sensitive() para poner a cero la memoria antes de liberarla: tanto tpm2_end_auth_session() como tpm_buf_check_hmac_response() lo hacen. La ruta de tpm_dev_release() es la \u00fanica que no lo hace, dejando material de clave en la memoria slab liberada hasta que finalmente sea sobrescrito.\n\nUsar kfree_sensitive() para consistencia con el resto del controlador y para asegurar que las claves de sesi\u00f3n sean borradas durante el desmontaje del dispositivo."}], "lastModified": "2026-07-23T08:10:00.137", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DE217E72-2117-418C-97F0-213685E36DC0", "versionEndExcluding": "6.12.86", "versionStartIncluding": "6.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A10AC84F-C058-47D5-85B4-E6E51A613B74", "versionEndExcluding": "6.18.27", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CDB78D6D-22C3-4154-B0D0-94AF1CE5C2E3", "versionEndExcluding": "7.0.4", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}