NULL Pointer Dereference Affecting kernel-rt-core package, versions <0:4.18.0-553.22.1.rt7.363.el8_10
Threat Intelligence
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTCORE-7098726
- published 24 May 2024
- disclosed 21 May 2024
Introduced: 21 May 2024
CVE-2021-47289 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-rt-core to version 0:4.18.0-553.22.1.rt7.363.el8_10 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-core package and not the kernel-rt-core package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
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.
References
- https://access.redhat.com/security/cve/CVE-2021-47289
- https://git.kernel.org/stable/c/38f54217b423c0101d03a00feec6fb8ec608b12e
- https://git.kernel.org/stable/c/cae3fa3d8165761f3000f523b11cfa1cd35206bc
- https://git.kernel.org/stable/c/ccf23a0888077a25a0793a746c3941db2a7562e4
- https://git.kernel.org/stable/c/fc68f42aa737dc15e7665a4101d4168aadb8e4c4