CVE-2021-46908

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

I

n the Linux kernel, the following vulnerability has been resolved: bpf: Use correct permission flag for mixed signed bounds arithmetic We forbid adding unknown scalars with mixed signed bounds due to the spectre v1 masking mitigation. Hence this also needs bypass_spec_v1 flag instead of allow_ptr_leaks.

References

Link	Resource
https://git.kernel.org/stable/c/4ccdc6c6cae38b91c871293fb0ed8c6845a61b51	Patch
https://git.kernel.org/stable/c/4f3ff11204eac0ee23acf64deecb3bad7b0db0c6	Patch
https://git.kernel.org/stable/c/9601148392520e2e134936e76788fc2a6371e7be	Patch
https://git.kernel.org/stable/c/4ccdc6c6cae38b91c871293fb0ed8c6845a61b51	Patch
https://git.kernel.org/stable/c/4f3ff11204eac0ee23acf64deecb3bad7b0db0c6	Patch
https://git.kernel.org/stable/c/9601148392520e2e134936e76788fc2a6371e7be	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

21 Nov 2024, 06:34

Type	Values Removed	Values Added
References	~~() https://git.kernel.org/stable/c/4ccdc6c6cae38b91c871293fb0ed8c6845a61b51 - Patch~~	() https://git.kernel.org/stable/c/4ccdc6c6cae38b91c871293fb0ed8c6845a61b51 - Patch
References	~~() https://git.kernel.org/stable/c/4f3ff11204eac0ee23acf64deecb3bad7b0db0c6 - Patch~~	() https://git.kernel.org/stable/c/4f3ff11204eac0ee23acf64deecb3bad7b0db0c6 - Patch
References	~~() https://git.kernel.org/stable/c/9601148392520e2e134936e76788fc2a6371e7be - Patch~~	() https://git.kernel.org/stable/c/9601148392520e2e134936e76788fc2a6371e7be - Patch

Information

Published : 2024-02-27 07:15

Updated : 2024-11-21 06:34

NVD link : CVE-2021-46908

Mitre link : CVE-2021-46908

CVE.ORG link : CVE-2021-46908

JSON object : View

Products Affected

linux_kernel

CWE

NVD-CWE-noinfo

{"id": "CVE-2021-46908", "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "[email protected]", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-02-27T07:15:06.977", "references": [{"url": "https://git.kernel.org/stable/c/4ccdc6c6cae38b91c871293fb0ed8c6845a61b51", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4f3ff11204eac0ee23acf64deecb3bad7b0db0c6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9601148392520e2e134936e76788fc2a6371e7be", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4ccdc6c6cae38b91c871293fb0ed8c6845a61b51", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/4f3ff11204eac0ee23acf64deecb3bad7b0db0c6", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/9601148392520e2e134936e76788fc2a6371e7be", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "[email protected]", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Use correct permission flag for mixed signed bounds arithmetic\n\nWe forbid adding unknown scalars with mixed signed bounds due to the\nspectre v1 masking mitigation. Hence this also needs bypass_spec_v1\nflag instead of allow_ptr_leaks."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: bpf: use el indicador de permiso correcto para aritm\u00e9tica de los l\u00edmites con signo mixto Prohibimos agregar escalares desconocidos con l\u00edmites con signo mixto debido a la mitigaci\u00f3n de enmascaramiento de Spectre v1. Por lo tanto, esto tambi\u00e9n necesita el indicador bypass_spec_v1 en lugar de enable_ptr_leaks."}], "lastModified": "2024-11-21T06:34:54.460", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DE87B38C-0350-471A-8830-58E1E02F7E2E", "versionEndExcluding": "5.10.32", "versionStartIncluding": "5.8.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3C5242B9-B5BD-4578-AD66-69DF59D54A14", "versionEndExcluding": "5.11.16", "versionStartIncluding": "5.11.0"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}