CVE-2022-49478

In the Linux kernel, the following vulnerability has been resolved: media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init Syzbot reported that -1 is used as array index. The problem was in missing validation check. hdw->unit_number is initialized with -1 and then if init table walk fails this value remains unchanged. Since code blindly uses this member for array indexing adding sanity check is the easiest fix for that. hdw->workpoll initialization moved upper to prevent warning in __flush_work.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/1310fc3538dcc375a2f46ef0a438512c2ca32827	Patch
https://git.kernel.org/stable/c/24e807541e4a9263ed928e6ae3498de3ad43bd1e	Patch
https://git.kernel.org/stable/c/2e004fe914b243db41fa96f9e583385f360ea58e	Patch
https://git.kernel.org/stable/c/3309c2c574e13b21b44729f5bdbf21f60189b79a	Patch
https://git.kernel.org/stable/c/4351bfe36aba9fa7dc9d68d498d25d41a0f45e67	Patch
https://git.kernel.org/stable/c/471bec68457aaf981add77b4f590d65dd7da1059	Patch
https://git.kernel.org/stable/c/a3304766d9384886e6d3092c776273526947a2e9	Patch
https://git.kernel.org/stable/c/a3660e06675bccec4bf149c7229ea1d491ba10d7	Patch
https://git.kernel.org/stable/c/f99a8b1ec0eddc2931aeaa4f490277a15b39f511	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::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	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 : 2025-02-26 07:01

Updated : 2025-10-01 20:16

NVD link : CVE-2022-49478

Mitre link : CVE-2022-49478

CVE.ORG link : CVE-2022-49478

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-129

Improper Validation of Array Index

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The problem was in\nmissing validation check.\n\nhdw->unit_number is initialized with -1 and then if init table walk fails\nthis value remains unchanged. Since code blindly uses this member for\narray indexing adding sanity check is the easiest fix for that.\n\nhdw->workpoll initialization moved upper to prevent warning in\n__flush_work."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: media: pvrusb2: arreglo array-index-out-of-bounds en pvr2_i2c_core_init Syzbot inform\u00f3 que se usa -1 como \u00edndice de matriz. El problema estaba en la falta de verificaci\u00f3n de validaci\u00f3n. hdw->unit_number se inicializa con -1 y luego, si falla el recorrido de tabla init, este valor permanece sin cambios. Dado que el c\u00f3digo usa ciegamente este miembro para la indexaci\u00f3n de matrices, agregar una verificaci\u00f3n de cordura es la soluci\u00f3n m\u00e1s f\u00e1cil para eso. La inicializaci\u00f3n de hdw->workpoll se movi\u00f3 hacia arriba para evitar la advertencia en __flush_work."}], "lastModified": "2025-10-01T20:16:27.457", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F4C7C7D7-D7D3-4358-818B-49B2982DB29A", "versionEndExcluding": "4.9.318", "versionStartIncluding": "2.6.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D6823775-2653-4644-A0D4-4E6E68F10C65", "versionEndExcluding": "4.14.283", "versionStartIncluding": "4.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B8CFA0F4-2D75-41F4-9753-87944A08B53B", "versionEndExcluding": "4.19.247", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3EC49633-14DE-4EBD-BB80-76AE2E3EABB9", "versionEndExcluding": "5.4.198", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "34ACD872-E5BC-401C-93D5-B357A62426E0", "versionEndExcluding": "5.10.121", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "20D41697-0E8B-4B7D-8842-F17BF2AA21E1", "versionEndExcluding": "5.15.46", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "15E2DD33-2255-4B76-9C15-04FF8CBAB252", "versionEndExcluding": "5.17.14", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8E122216-2E9E-4B3E-B7B8-D575A45BA3C2", "versionEndExcluding": "5.18.3", "versionStartIncluding": "5.18"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}