CVE-2022-50244
cxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter()
Description
In the Linux kernel, the following vulnerability has been resolved: cxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter() If device_register() fails in cxl_pci_afu|adapter(), the device is not added, device_unregister() can not be called in the error path, otherwise it will cause a null-ptr-deref because of removing not added device. As comment of device_register() says, it should use put_device() to give up the reference in the error path. So split device_unregister() into device_del() and put_device(), then goes to put dev when register fails.
INFO
Published Date :
Sept. 15, 2025, 2:15 p.m.
Last Modified :
Sept. 15, 2025, 3:21 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the Linux kernel to the latest version.
- Apply the specific patch for the cxl driver.
- Reboot the system after applying updates.
References to Advisories, Solutions, and Tools
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information, practical solutions, and valuable tools related to
CVE-2022-50244.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-50244 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-50244
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2022-50244 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-50244 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 15, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: cxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter() If device_register() fails in cxl_pci_afu|adapter(), the device is not added, device_unregister() can not be called in the error path, otherwise it will cause a null-ptr-deref because of removing not added device. As comment of device_register() says, it should use put_device() to give up the reference in the error path. So split device_unregister() into device_del() and put_device(), then goes to put dev when register fails. Added Reference https://git.kernel.org/stable/c/02cd3032b154fa02fdf90e7467abaeed889330b2 Added Reference https://git.kernel.org/stable/c/0f63c0ddc2ea20d783d29243f4dbe0f9e95dfdec Added Reference https://git.kernel.org/stable/c/139abd4c626a6f7ce02789ed5f73aa2256e0542b Added Reference https://git.kernel.org/stable/c/22511eefa61db26e12c97dd7ada3071dbdfcb004 Added Reference https://git.kernel.org/stable/c/2f5fd31b2f24b9b8a80ab566fd8c4e1e94cb4339 Added Reference https://git.kernel.org/stable/c/361412dae1690d4b5df6f92fc943cdc773c95cbc Added Reference https://git.kernel.org/stable/c/82e5481428faf11c79b9c094dd24a1849bbf64ac Added Reference https://git.kernel.org/stable/c/82e68432668ae75b4c814d160f6987ecb0681273 Added Reference https://git.kernel.org/stable/c/c4b2e35df919d99bbbed033c2fa0b607f9f463b5