Linux Kernel up to 5.4.1 internal.h fpregs_state_valid permission assignment

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 5.4.1. This issue affects the function fpregs_state_valid of the file arch/x86/include/asm/fpu/internal.h. The manipulation results in permission assignment. This vulnerability is known as CVE-2019-19602. Attacking locally is a requirement. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

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 permission assignment vulnerability. CWE is classifying the issue as CWE-732. The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors. 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.

Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Permission assignment
CWE: CWE-732 / CWE-275 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.4.2
Patch: git.kernel.org

Timelineinfo

12/05/2019 🔍
12/05/2019 +0 days 🔍
12/05/2019 +0 days 🔍
03/07/2024 +1554 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 59c4bd853abcea95eccc167a7d7fd5f1a5f47b98
Status: Not defined

CVE: CVE-2019-19602 (🔍)
GCVE (CVE): GCVE-0-2019-19602
GCVE (VulDB): GCVE-100-146700

Entryinfo

Created: 12/05/2019 18:14
Updated: 03/07/2024 14:48
Changes: 12/05/2019 18:14 (39), 12/05/2019 18:19 (18), 03/07/2024 14:44 (6), 03/07/2024 14:48 (1)
Complete: 🔍
Cache ID: 216::103

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