Answer in brief
CVE-2026-46283 records a Medium severity (CVSS 5.5) vulnerability in tpm: Use kfree_sensitive() to free auth session in tpm_dev_release(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=699e3efd6c645c741ea4d6d58282c56b6d108cf7 <dd3ac52ea7a001406c7dbc663aae4b9f89da679a || >=699e3efd6c645c741ea4d6d58282c56b6d108cf7 <53e6d2d834df40960b655b353e7a8ff4d927e1c7 || >=699e3efd6c645c741ea4d6d58282c56b6d108cf7 <84ced03172da544c9f8c0862faad48104f519352 || >=699e3efd6c645c741ea4d6d58282c56b6d108cf7 <c424d2664f08c77f08b4580b5f0cbaabf7c229b2 | dd3ac52ea7a001406c7dbc663aae4b9f89da679a, 53e6d2d834df40960b655b353e7a8ff4d927e1c7, 84ced03172da544c9f8c0862faad48104f519352, c424d2664f08c77f08b4580b5f0cbaabf7c229b2 |
| Linux/Linuxgeneric | 6.10 | Not reported |
Published upstream
Jun 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 7, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-46283 records a Medium severity (CVSS 5.5) vulnerability in tpm: Use kfree_sensitive() to free auth session in tpm_dev_release(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=699e3efd6c645c741ea4d6d58282c56b6d108cf7 <dd3ac52ea7a001406c7dbc663aae4b9f89da679a || >=699e3efd6c645c741ea4d6d58282c56b6d108cf7 <53e6d2d834df40960b655b353e7a8ff4d927e1c7 || >=699e3efd6c645c741ea4d6d58282c56b6d108cf7 <84ced03172da544c9f8c0862faad48104f519352 || >=699e3efd6c645c741ea4d6d58282c56b6d108cf7 <c424d2664f08c77f08b4580b5f0cbaabf7c229b2 | dd3ac52ea7a001406c7dbc663aae4b9f89da679a, 53e6d2d834df40960b655b353e7a8ff4d927e1c7, 84ced03172da544c9f8c0862faad48104f519352, c424d2664f08c77f08b4580b5f0cbaabf7c229b2 |
| Linux/Linuxgeneric | 6.10 | Not reported |
Published upstream
Jun 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 7, 2026
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.
Quoted source text, attributed separately from HOL analysis.