CVE-2022-49072

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49072
In the Linux kernel, the following vulnerability has been resolved: gpio: Restrict usage of GPIO chip irq members before initialization GPIO chip irq members are exposed before they could be completely initialized and this leads to race conditions. One such issue was observed for the gc->irq.domain variable which was accessed through the I2C interface in gpiochip_to_irq() before it could be initialized by gpiochip_add_irqchip(). This resulted in Kernel NULL pointer dereference. Following are the logs for reference :- kernel: Call Trace: kernel: gpiod_to_irq+0x53/0x70 kernel: acpi_dev_gpio_irq_get_by+0x113/0x1f0 kernel: i2c_acpi_get_irq+0xc0/0xd0 kernel: i2c_device_probe+0x28a/0x2a0 kernel: really_probe+0xf2/0x460 kernel: RIP: 0010:gpiochip_to_irq+0x47/0xc0 To avoid such scenarios, restrict usage of GPIO chip irq members before they are completely initialized.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

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/0912cf021fb5749372b3782611d8b1de4986c13a Patch
https://git.kernel.org/stable/c/2c1fa3614795e2b24da1ba95de0b27b8f6ea4537 Patch
https://git.kernel.org/stable/c/5467801f1fcbdc46bc7298a84dbf3ca1ff2a7320 Patch
https://git.kernel.org/stable/c/7e88a50704b0c49ad3f2d11e8b963341cf68a89f Patch
https://git.kernel.org/stable/c/f8dea54f74cae8c2e4d7b2952e8fed7743a85c87 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:5.18:rc1:*:*:*:*:*:*
History

23 Sep 2025, 18:29

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: gpio: Restringir el uso de los miembros IRQ del chip GPIO antes de la inicialización Los miembros IRQ del chip GPIO quedan expuestos antes de que se puedan inicializar por completo y esto genera condiciones de ejecución. Se observó un problema de este tipo para la variable gc->irq.domain, a la que se accedía a través de la interfaz I2C en gpiochip_to_irq() antes de que pudiera inicializarse mediante gpiochip_add_irqchip(). Esto provocaba la desreferencia del puntero NULL del kernel. A continuación se muestran los registros de referencia: kernel: Seguimiento de llamadas: kernel: gpiod_to_irq+0x53/0x70 kernel: acpi_dev_gpio_irq_get_by+0x113/0x1f0 kernel: i2c_acpi_get_irq+0xc0/0xd0 kernel: i2c_device_probe+0x28a/0x2a0 kernel: really_probe+0xf2/0x460 kernel: RIP: 0010:gpiochip_to_irq+0x47/0xc0 Para evitar tales escenarios, restrinja el uso de los miembros irq del chip GPIO antes de que se inicialicen por completo.
References () https://git.kernel.org/stable/c/0912cf021fb5749372b3782611d8b1de4986c13a - () https://git.kernel.org/stable/c/0912cf021fb5749372b3782611d8b1de4986c13a - Patch
References () https://git.kernel.org/stable/c/2c1fa3614795e2b24da1ba95de0b27b8f6ea4537 - () https://git.kernel.org/stable/c/2c1fa3614795e2b24da1ba95de0b27b8f6ea4537 - Patch
References () https://git.kernel.org/stable/c/5467801f1fcbdc46bc7298a84dbf3ca1ff2a7320 - () https://git.kernel.org/stable/c/5467801f1fcbdc46bc7298a84dbf3ca1ff2a7320 - Patch
References () https://git.kernel.org/stable/c/7e88a50704b0c49ad3f2d11e8b963341cf68a89f - () https://git.kernel.org/stable/c/7e88a50704b0c49ad3f2d11e8b963341cf68a89f - Patch
References () https://git.kernel.org/stable/c/f8dea54f74cae8c2e4d7b2952e8fed7743a85c87 - () https://git.kernel.org/stable/c/f8dea54f74cae8c2e4d7b2952e8fed7743a85c87 - Patch
CWE CWE-476
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*
First Time Linux linux Kernel
Linux

26 Feb 2025, 07:00

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:00

Updated : 2025-09-23 18:29

NVD link : CVE-2022-49072

Mitre link : CVE-2022-49072

CVE.ORG link : CVE-2022-49072

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference