CVE-2024-47757

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix potential oob read in nilfs_btree_check_delete() The function nilfs_btree_check_delete(), which checks whether degeneration to direct mapping occurs before deleting a b-tree entry, causes memory access outside the block buffer when retrieving the maximum key if the root node has no entries. This does not usually happen because b-tree mappings with 0 child nodes are never created by mkfs.nilfs2 or nilfs2 itself. However, it can happen if the b-tree root node read from a device is configured that way, so fix this potential issue by adding a check for that case.

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/257f9e5185eb6de83377caea686c306e22e871f2	Patch
https://git.kernel.org/stable/c/a33e967b681e088a125b979975c93e3453e686cd	Patch
https://git.kernel.org/stable/c/a8abfda768b9f33630cfbc4af6c4214f1e5681b0	Patch
https://git.kernel.org/stable/c/c4cbcc64bb31e67e02940ce060cc77f7180564cf	Patch
https://git.kernel.org/stable/c/c4f8554996e8ada3be872dfb8f60e93bcf15fb27	Patch
https://git.kernel.org/stable/c/d20674f31626e0596ae4c1d9401dfb6739b81b58	Patch
https://git.kernel.org/stable/c/ed76d381dae125b81d09934e365391a656249da8
https://git.kernel.org/stable/c/f3a9859767c7aea758976f5523903d247e585129
https://git.kernel.org/stable/c/f9c96351aa6718b42a9f42eaf7adce0356bdb5e8	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::::::::

History

No history.

Information

Published : 2024-10-21 13:15

Updated : 2024-11-08 16:15

NVD link : CVE-2024-47757

Mitre link : CVE-2024-47757

CVE.ORG link : CVE-2024-47757

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-125

Out-of-bounds Read

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However, it can happen\nif the b-tree root node read from a device is configured that way, so fix\nthis potential issue by adding a check for that case."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nilfs2: se corrige una posible lectura fuera de l\u00ednea en nilfs_btree_check_delete() La funci\u00f3n nilfs_btree_check_delete(), que comprueba si se produce una degeneraci\u00f3n en el mapeo directo antes de eliminar una entrada del \u00e1rbol b, provoca un acceso a la memoria fuera del b\u00fafer de bloque al recuperar la clave m\u00e1xima si el nodo ra\u00edz no tiene entradas. Esto no suele ocurrir porque los mapeos de \u00e1rboles b con 0 nodos secundarios nunca son creados por mkfs.nilfs2 o nilfs2 en s\u00ed. 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