soc/tegra: pmc: Fix uninitialised clock rate
CVSS score
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EPSS probability
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Risk score
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Published
3 h ago
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
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Evidence confidence
%55
Short explanation
A vulnerability exists in the Linux kernel soc/tegra pmc driver where legacy 32-bit Tegra devices trigger a warning in the tegra_pmc_enter_suspend_mode() function due to an uninitialised clock rate.
This vulnerability can trigger warnings and cause instability because updating the PMC driver to create the dynamic PMC context missed updating the rate in the early PMC context.
What should be done?
- Review the provided patch references
- Follow vendor advisories
Chain of evidence and sources
Eski 32-bit Tegra cihazlarında early_pmc->rate değişkeninin yapılandırılmaması nedeniyle tegra_pmc_enter_suspend_mode() fonksiyonunda uyarı tetiklenmektedir.
Sorun, PMC sürücüsünün dinamik bağlam oluşturacak şekilde güncellenmesi ancak erken PMC bağlamındaki hızın güncellenmesinin atlanması sonrasında ortaya çıkmıştır.
Show the technical text from the sources
In the Linux kernel, the following vulnerability has been resolved: soc/tegra: pmc: Fix uninitialised clock rate For legacy 32-bit Tegra devices, the warning in the tegra_pmc_enter_suspend_mode() function is being triggered because the early_pmc->rate variable is never configured and hence, always 0. This issue started occurring after updating the PMC driver to create the PMC context dynamically which causes the 'rate' to be set in the new dynamic context, but missed updating the rate in the early PMC context. Fix this by initialising the early_pmc->rate variable for 32-bit Tegra devices when the rate for the PMC context is initialised. [treding@nvidia.com: move assignment to existing #ifdef block]
This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.
IMPACT: Affected Products and Software
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SCORING: CVSS from Multiple Sources
CVSS Scores
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| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| The sources have not yet published a verified CVSS metric. | ||||
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-99259 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-99259 weaknesses.
Official Sources and Advisories
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