Linux Kernel up to 5.4.1 internal.h fpregs_state_valid permission assignment

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CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

A vulnerability classified as critical has been found in Linux Kernel up to 5.4.1 (Operating System). Affected is the function fpregs_state_valid of the file arch/x86/include/asm/fpu/internal.h. The manipulation with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-732. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

fpregs_state_valid in arch/x86/include/asm/fpu/internal.h in the Linux kernel before 5.4.2, when GCC 9 is used, allows context-dependent attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact because of incorrect fpu_fpregs_owner_ctx caching, as demonstrated by mishandling of signal-based non-cooperative preemption in Go 1.14 prereleases on amd64, aka CID-59c4bd853abc.

The weakness was published 12/05/2019. This vulnerability is traded as CVE-2019-19602 since 12/05/2019. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

Upgrading to version 5.4.2 eliminates this vulnerability.

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VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

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VulDB Base Score: 🔍
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Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-732
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfoedit

Interest: 🔍
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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.4.2

Timelineinfoedit

12/05/2019 🔍
12/05/2019 +0 days 🔍
12/05/2019 +0 days 🔍
12/05/2019 +0 days 🔍

Sourcesinfoedit

Vendor: https://www.kernel.org/

Status: Not defined

CVE: CVE-2019-19602 (🔍)

Entryinfoedit

Created: 12/05/2019 06:14 PM
Updated: 12/05/2019 06:19 PM
Changes: (18) software_type vulnerability_cwe vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a source_cve_assigned source_cve_nvd_summary
Complete: 🔍

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