CVE-2021-46965

In the Linux kernel, the following vulnerability has been resolved: mtd: physmap: physmap-bt1-rom: Fix unintentional stack access Cast &data to (char *) in order to avoid unintentionally accessing the stack. Notice that data is of type u32, so any increment to &data will be in the order of 4-byte chunks, and this piece of code is actually intended to be a byte offset. Addresses-Coverity-ID: 1497765 ("Out-of-bounds access")

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/34ec706bf0b7c4ca249a729c1bcb91f706c7a7be	Patch
https://git.kernel.org/stable/c/4d786870e3262ec098a3b4ed10b895176bc66ecb	Patch
https://git.kernel.org/stable/c/4e4ebb827bf09311469ffd9d0c14ed40ed9747aa	Patch
https://git.kernel.org/stable/c/683313993dbe1651c7aa00bb42a041d70e914925	Patch
https://git.kernel.org/stable/c/34ec706bf0b7c4ca249a729c1bcb91f706c7a7be	Patch
https://git.kernel.org/stable/c/4d786870e3262ec098a3b4ed10b895176bc66ecb	Patch
https://git.kernel.org/stable/c/4e4ebb827bf09311469ffd9d0c14ed40ed9747aa	Patch
https://git.kernel.org/stable/c/683313993dbe1651c7aa00bb42a041d70e914925	Patch

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2024-02-27 19:04

Updated : 2025-01-08 17:16

NVD link : CVE-2021-46965

Mitre link : CVE-2021-46965

CVE.ORG link : CVE-2021-46965

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-125

Out-of-bounds Read

{"id": "CVE-2021-46965", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 1.8}]}, "published": "2024-02-27T19:04:07.087", "references": [{"url": "https://git.kernel.org/stable/c/34ec706bf0b7c4ca249a729c1bcb91f706c7a7be", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4d786870e3262ec098a3b4ed10b895176bc66ecb", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4e4ebb827bf09311469ffd9d0c14ed40ed9747aa", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/683313993dbe1651c7aa00bb42a041d70e914925", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/34ec706bf0b7c4ca249a729c1bcb91f706c7a7be", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/4d786870e3262ec098a3b4ed10b895176bc66ecb", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/4e4ebb827bf09311469ffd9d0c14ed40ed9747aa", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/683313993dbe1651c7aa00bb42a041d70e914925", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: physmap: physmap-bt1-rom: Fix unintentional stack access\n\nCast &data to (char *) in order to avoid unintentionally accessing\nthe stack.\n\nNotice that data is of type u32, so any increment to &data\nwill be in the order of 4-byte chunks, and this piece of code\nis actually intended to be a byte offset.\n\nAddresses-Coverity-ID: 1497765 (\"Out-of-bounds access\")"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mtd: physmap: physmap-bt1-rom: corrige el acceso involuntario a la pila. Transmite &data a (char *) para evitar el acceso involuntario a la pila. Tenga en cuenta que los datos son de tipo u32, por lo que cualquier incremento en &data ser\u00e1 del orden de fragmentos de 4 bytes, y este fragmento de c\u00f3digo en realidad est\u00e1 destinado a ser un desplazamiento de bytes. Direcciones-Coverity-ID: 1497765 (\"Acceso fuera de l\u00edmites\")"}], "lastModified": "2025-01-08T17:16:07.213", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A3C0C655-F217-444C-9131-45D82FAF3CFF", "versionEndExcluding": "5.10.36", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EEC03413-9760-46D4-AC1D-EB084A1D4111", "versionEndExcluding": "5.11.20", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F9D6B2DE-7E4A-4B3B-9AEE-3A2C5F23DA32", "versionEndExcluding": "5.12.3", "versionStartIncluding": "5.12"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}