CVE-2023-52984

In the Linux kernel, the following vulnerability has been resolved: net: phy: dp83822: Fix null pointer access on DP83825/DP83826 devices The probe() function is only used for the DP83822 PHY, leaving the private data pointer uninitialized for the smaller DP83825/26 models. While all uses of the private data structure are hidden in 82822 specific callbacks, configuring the interrupt is shared across all models. This causes a NULL pointer dereference on the smaller PHYs as it accesses the private data unchecked. Verifying the pointer avoids that.

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

References

Link	Resource
https://git.kernel.org/stable/c/2cd1e9c013ec56421c58921b1ddf1d2d53bd47fa	Patch
https://git.kernel.org/stable/c/362a2f5531dc0e5b0b5b3e3a541000dbffa75461	Patch
https://git.kernel.org/stable/c/422ae7d9c7221e8d4c8526d0f54106307d69d2dc	Patch
https://git.kernel.org/stable/c/78901b10522cdf6badf24acf65a892637596bccc	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:6.2:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.2:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.2:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.2:rc4::::::
	cpe:2.3:o:linux:linux_kernel:6.2:rc5::::::
	cpe:2.3:o:linux:linux_kernel:6.2:rc6::::::

History

No history.

Information

Published : 2025-03-27 17:15

Updated : 2025-10-01 18:15

NVD link : CVE-2023-52984

Mitre link : CVE-2023-52984

CVE.ORG link : CVE-2023-52984

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

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Verifying the pointer avoids that."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: phy: dp83822: Se corrige el acceso a puntero nulo en dispositivos DP83825/DP83826. La funci\u00f3n probe() solo se utiliza para la estructura f\u00edsica (PHY) DP83822, lo que deja el puntero de datos privados sin inicializar para los modelos DP83825/26 m\u00e1s peque\u00f1os. Si bien todos los usos de la estructura de datos privados est\u00e1n ocultos en las devoluciones de llamada espec\u00edficas de 82822, la configuraci\u00f3n de la interrupci\u00f3n se comparte entre todos los modelos. Esto provoca una desreferencia de puntero nulo en las estructuras f\u00edsicas (PHY) m\u00e1s peque\u00f1as, ya que accede a los datos privados sin verificar. 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