Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: tpm2-sessions: Fix out of range indexing in name_size 'name_size' does not have… (CVE-2025-68792)
In the Linux kernel, the following vulnerability has been resolved: tpm2-sessions: Fix out of range indexing in name_size 'name_size' does not have any range checks, and it just directly indexes with TPM_ALG_ID, which could lead into memory corruption at worst. Address the issue by only processing known values and returning -EINVAL for unrecognized values. Make also 'tpm_buf_append_name' and 'tpm_buf_fill_hmac_session' fallible so that errors are detected before causing any spurious TPM traffic. End also the authorization session on failure in both of the functions, as the session state would be then by definition corrupted.
AI Analysis
Technical Summary
CVE-2025-68792 describes a vulnerability in the Linux kernel's TPM2 sessions where the 'name_size' variable is used without range checks, directly indexing with TPM_ALG_ID. This can cause memory corruption. The fix involves processing only known values, returning errors for unrecognized inputs, making certain TPM buffer functions fallible to detect errors early, and ending authorization sessions on failure to prevent corrupted session states.
Potential Impact
The vulnerability can lead to memory corruption, which may result in confidentiality, integrity, and availability impacts on the affected system. The CVSS vector indicates local attack vector with low complexity and low privileges required, no user interaction, unchanged scope, and high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid untrusted input to the TPM2 sessions component. Monitor vendor channels for updates and apply patches promptly once released.
Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: tpm2-sessions: Fix out of range indexing in name_size 'name_size' does not have… (CVE-2025-68792)
Description
In the Linux kernel, the following vulnerability has been resolved: tpm2-sessions: Fix out of range indexing in name_size 'name_size' does not have any range checks, and it just directly indexes with TPM_ALG_ID, which could lead into memory corruption at worst. Address the issue by only processing known values and returning -EINVAL for unrecognized values. Make also 'tpm_buf_append_name' and 'tpm_buf_fill_hmac_session' fallible so that errors are detected before causing any spurious TPM traffic. End also the authorization session on failure in both of the functions, as the session state would be then by definition corrupted.
CVSS v3.1
Score 7.8high
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-68792 describes a vulnerability in the Linux kernel's TPM2 sessions where the 'name_size' variable is used without range checks, directly indexing with TPM_ALG_ID. This can cause memory corruption. The fix involves processing only known values, returning errors for unrecognized inputs, making certain TPM buffer functions fallible to detect errors early, and ending authorization sessions on failure to prevent corrupted session states.
Potential Impact
The vulnerability can lead to memory corruption, which may result in confidentiality, integrity, and availability impacts on the affected system. The CVSS vector indicates local attack vector with low complexity and low privileges required, no user interaction, unchanged scope, and high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid untrusted input to the TPM2 sessions component. Monitor vendor channels for updates and apply patches promptly once released.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-2wfq-pvgx-w5wx
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2025-68792"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a6b72d29c2644c7f8477669
Added to database: 07/30/2026, 15:50:42 UTC
Last enriched: 07/30/2026, 19:08:32 UTC
Last updated: 09/10/2026, 19:36:51 UTC
Views: 11
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