CVE-2026-99221
UnknownSummary
In the Linux kernel, trusted_tpm_unseal() proceeded to call pcrlock() after a TPM unseal failure; if pcrlock() succeeded, its return value overwrote the unseal error, causing key instantiation to succeed despite the failure.
Risk Assessment
The flaw may allow a trusted key to be created despite a failed TPM verification, weakening the security guarantees of TPM-backed keys. This can affect the integrity of key protection mechanisms.
Recommendation
Update the Linux kernel to a version with the fix that returns immediately on TPM unseal failure. Verify whether trusted keys are used in your environment.
Other vulnerabilities in Linux kernel
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- CVE-2026-58847Unknown
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- CVE-2026-58828High
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- CVE-2026-58826High
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- CVE-2026-58825High
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- CVE-2026-99242Unknown
In the Linux kernel, a race between fallocate and mmap reads in NTFS was fixed. Fallocate only took invalidate_lock for punch hole, collapse range and insert range operations, and during standard allocation new clusters were mapped before being zeroed, allowing concurrent mmap page faults to read uninitialized disk data.
- CVE-2026-99241Unknown
In the Linux kernel, a missing lock in ntfs_filemap_page_mkwrite() was fixed; it called iomap_page_mkwrite() without holding mapping->invalidate_lock. A concurrent truncate or fallocate could be invalidating pagecache and rewriting the runlist while the write fault mapped blocks and dirtied the folio.
- CVE-2026-99240Unknown
In the Linux kernel, the DAMON subsystem (mm/damon/core) has a division-by-zero bug when a DAMOS quota goal has a target_value of zero. The fix moves handling of this corner case to the core layer by adding validation in damos_commit_quota_goal(), which now returns an error for zero target values.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: keys/trusted_keys: return immediately after TPM unseal failure trusted_tpm_unseal() proceeds to pcrlock() when the TPM unseal operation fails. If pcrlock() succeeds, its return value overwrites the unseal error, causing key instantiation to succeed. Return immediately when unseal fails to preserve the original error.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS