CVE-2024-45029

Summary

In the Linux kernel, the following vulnerability has been resolved:

i2c: tegra: Do not mark ACPI devices as irq safe

On ACPI machines, the tegra i2c module encounters an issue due to a mutex being called inside a spinlock. This leads to the following bug:

BUG: sleeping function called from invalid context at kernel/locking/mutex.c:585
...

Call trace:
__might_sleep
__mutex_lock_common
mutex_lock_nested
acpi_subsys_runtime_resume
rpm_resume
tegra_i2c_xfer

The problem arises because during __pm_runtime_resume(), the spinlock &dev->power.lock is acquired before rpm_resume() is called. Later, rpm_resume() invokes acpi_subsys_runtime_resume(), which relies on mutexes, triggering the error.

To address this issue, devices on ACPI are now marked as not IRQ-safe, considering the dependency of acpi_subsys_runtime_resume() on mutexes.

Affected Software

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

CVE Program Container

Additional References

• https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

References

• https://git.kernel.org/stable/c/a89aef1e6cc43fa019a58080ed05c839e6c77876
• https://git.kernel.org/stable/c/6861faf4232e4b78878f2de1ed3ee324ddae2287
• https://git.kernel.org/stable/c/2853e1376d8161b04c9ff18ba82b43f08a049905
• https://git.kernel.org/stable/c/14d069d92951a3e150c0a81f2ca3b93e54da913b

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