SB2026061086 - Sensitive Information in Resource Not Removed Before Reuse in Linux kernel char tpm driver
Published: June 10, 2026
Security Bulletin ID
SB2026061086
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Sensitive Information in Resource Not Removed Before Reuse (CVE-ID: CVE-2026-46283)
CWE-ID: CWE-226 - Sensitive Information in Resource Not Removed Before Reuse
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to missing sensitive data clearing in tpm_dev_release() when releasing a TPM device. A local user can trigger device teardown to disclose sensitive information.
The freed structure may contain HMAC session keys, nonces, and passphrase data.
Remediation
Install update from vendor's website.