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CVE-2021-47289

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CVE-2021-47289

Published: May 21, 2024

Modified: May 11, 2026

PUBLISHED

Description

In the Linux kernel, the following vulnerability has been resolved: ACPI: fix NULL pointer dereference Commit 71f642833284 ("ACPI: utils: Fix reference counting in for_each_acpi_dev_match()") started doing "acpi_dev_put()" on a pointer that was possibly NULL. That fails miserably, because that helper inline function is not set up to handle that case. Just make acpi_dev_put() silently accept a NULL pointer, rather than calling down to put_device() with an invalid offset off that NULL pointer.

VendorProductVersions

Linux

Linux

affected
fe066621c7966fe47fa17c6be6fd81adb3c0509f - < 38f54217b423c0101d03a00feec6fb8ec608b12e
affected
fe066621c7966fe47fa17c6be6fd81adb3c0509f - < cae3fa3d8165761f3000f523b11cfa1cd35206bc
affected
fe066621c7966fe47fa17c6be6fd81adb3c0509f - < ccf23a0888077a25a0793a746c3941db2a7562e4
affected
fe066621c7966fe47fa17c6be6fd81adb3c0509f - < fc68f42aa737dc15e7665a4101d4168aadb8e4c4

Linux

Linux

affected
5.2
unaffected
0 - < 5.2
unaffected
5.4.139 - <= 5.4.*
unaffected
5.10.57 - <= 5.10.*
unaffected
5.13.6 - <= 5.13.*

+1 more versions

References

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