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CVE PROGRAM SOURCE RECORDUnscored

CVE-2022-49072

gpio: Restrict usage of GPIO chip irq members before initialization

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 48057ed1840fde9239b1e000bea1a0a1f07c5e99 to < 7e88a50704b0c49ad3f2d11e8b963341cf68a89faffected
  • 48057ed1840fde9239b1e000bea1a0a1f07c5e99 to < 0912cf021fb5749372b3782611d8b1de4986c13aaffected
  • 48057ed1840fde9239b1e000bea1a0a1f07c5e99 to < 2c1fa3614795e2b24da1ba95de0b27b8f6ea4537affected
  • 48057ed1840fde9239b1e000bea1a0a1f07c5e99 to < f8dea54f74cae8c2e4d7b2952e8fed7743a85c87affected
  • 48057ed1840fde9239b1e000bea1a0a1f07c5e99 to < 5467801f1fcbdc46bc7298a84dbf3ca1ff2a7320affected
  • 44dfa46aaf7cf594ac89bc1a0c0e56c498b31269affected
  • 5.2.14 to < 5.3affected

Linux Linux

Default version status: affected

  • 5.3affected
  • 0 to < 5.3unaffected
  • 5.10.111 to ≤ 5.10.*unaffected
  • 5.15.34 to ≤ 5.15.*unaffected
  • 5.16.20 to ≤ 5.16.*unaffected
  • 5.17.3 to ≤ 5.17.*unaffected
  • 5.18 to ≤ *unaffected

References