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In the Linux kernel, the following vulnerability has been resolved:
ACPI: video: check for error while searching for backlight device parent
If acpi_get_parent() called in acpi_video_dev_register_backlight()
fails, for example, because acpi_ut_acquire_mutex() fails inside
acpi_get_parent), this can lead to incorrect (uninitialized)
acpi_parent handle being passed to acpi_get_pci_dev() for detecting
the parent pci device.
Check acpi_get_parent() result and set parent device only in case of success.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
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kernel.org https://git.kernel.org/stable/c/1e3a2b9b4039bb4d136dca59fb31e06465e056f3 [No types assigned]
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kernel.org https://git.kernel.org/stable/c/2124c5bc22948fc4d09a23db4a8acdccc7d21e95 [No types assigned]
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kernel.org https://git.kernel.org/stable/c/39af144b6d01d9b40f52e5d773e653957e6c379c [No types assigned]
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kernel.org https://git.kernel.org/stable/c/3a370502a5681986f9828e43be75ce26c6ab24af [No types assigned]
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kernel.org https://git.kernel.org/stable/c/556f02699d33c1f40b1b31bd25828ce08fa165d8 [No types assigned]
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kernel.org https://git.kernel.org/stable/c/72884ce4e10417b1233b614bf134da852df0f15f [No types assigned]
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kernel.org https://git.kernel.org/stable/c/c4e1a0ef0b4782854c9b77a333ca912b392bed2f [No types assigned]
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kernel.org https://git.kernel.org/stable/c/ccd45faf4973746c4f30ea41eec864e5cf191099 [No types assigned]
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