Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.4.139 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/38f54217b423c0101d03a00feec6fb8ec608b12ePatch
- https://git.kernel.org/stable/c/cae3fa3d8165761f3000f523b11cfa1cd35206bcPatch
- https://git.kernel.org/stable/c/ccf23a0888077a25a0793a746c3941db2a7562e4Patch
- https://git.kernel.org/stable/c/fc68f42aa737dc15e7665a4101d4168aadb8e4c4Patch
- https://git.kernel.org/stable/c/38f54217b423c0101d03a00feec6fb8ec608b12ePatch
- https://git.kernel.org/stable/c/cae3fa3d8165761f3000f523b11cfa1cd35206bcPatch
- https://git.kernel.org/stable/c/ccf23a0888077a25a0793a746c3941db2a7562e4Patch
- https://git.kernel.org/stable/c/fc68f42aa737dc15e7665a4101d4168aadb8e4c4Patch
FAQ
What is CVE-2021-47289?
CVE-2021-47289 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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()") starte...
How severe is CVE-2021-47289?
CVE-2021-47289 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-47289?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.