CVE-2026-46283: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: tpm: Use kfree_sensitive() to free auth session in tpm_dev_release() tpm_dev_release() uses plain kfree() to free chip->auth, which contains sensitive cryptographic material including HMAC session keys, nonces, and passphrase data (struct tpm2_auth). Every other code path that frees this structure uses kfree_sensitive() to zero the memory before releasing it: both tpm2_end_auth_session() and tpm_buf_check_hmac_response() do so. The tpm_dev_release() path is the only one that does not, leaving key material in freed slab memory until it is eventually overwritten. Use kfree_sensitive() for consistency with the rest of the driver and to ensure session keys are scrubbed during device teardown.

Засегнати продукти

• Linux Linux: 699e3efd6c645c741ea4d6d58282c56b6d108cf7 преди dd3ac52ea7a001406c7dbc663aae4b9f89da679a; 699e3efd6c645c741ea4d6d58282c56b6d108cf7 преди 53e6d2d834df40960b655b353e7a8ff4d927e1c7; 699e3efd6c645c741ea4d6d58282c56b6d108cf7 преди 84ced03172da544c9f8c0862faad48104f519352; 699e3efd6c645c741ea4d6d58282c56b6d108cf7 преди c424d2664f08c77f08b4580b5f0cbaabf7c229b2
• Linux Linux: 6.10; преди 6.10; 6.12.86 до 6.12.*; 6.18.27 до 6.18.*; 7.0.4 до 7.0.*; от 7.1 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-46283
• https://nvd.nist.gov/vuln/detail/CVE-2026-46283
• https://git.kernel.org/stable/c/dd3ac52ea7a001406c7dbc663aae4b9f89da679a
• https://git.kernel.org/stable/c/53e6d2d834df40960b655b353e7a8ff4d927e1c7
• https://git.kernel.org/stable/c/84ced03172da544c9f8c0862faad48104f519352
• https://git.kernel.org/stable/c/c424d2664f08c77f08b4580b5f0cbaabf7c229b2