CVE - CVE-2023-52445

CVE-ID
CVE-2023-52445	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: media: pvrusb2: fix use after free on context disconnection Upon module load, a kthread is created targeting the pvr2_context_thread_func function, which may call pvr2_context_destroy and thus call kfree() on the context object. However, that might happen before the usb hub_event handler is able to notify the driver. This patch adds a sanity check before the invalid read reported by syzbot, within the context disconnection call stack.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/2cf0005d315549b8d2b940ff96a66c2a889aa795 URL:https://git.kernel.org/stable/c/2cf0005d315549b8d2b940ff96a66c2a889aa795 MISC:https://git.kernel.org/stable/c/30773ea47d41773f9611ffb4ebc9bda9d19a9e7e URL:https://git.kernel.org/stable/c/30773ea47d41773f9611ffb4ebc9bda9d19a9e7e MISC:https://git.kernel.org/stable/c/3233d8bf7893550045682192cb227af7fa3defeb URL:https://git.kernel.org/stable/c/3233d8bf7893550045682192cb227af7fa3defeb MISC:https://git.kernel.org/stable/c/437b5f57732bb4cc32cc9f8895d2010ee9ff521c URL:https://git.kernel.org/stable/c/437b5f57732bb4cc32cc9f8895d2010ee9ff521c MISC:https://git.kernel.org/stable/c/47aa8fcd5e8b5563af4042a00f25ba89bef8f33d URL:https://git.kernel.org/stable/c/47aa8fcd5e8b5563af4042a00f25ba89bef8f33d MISC:https://git.kernel.org/stable/c/ded85b0c0edd8f45fec88783d7555a5b982449c1 URL:https://git.kernel.org/stable/c/ded85b0c0edd8f45fec88783d7555a5b982449c1 MISC:https://git.kernel.org/stable/c/ec3634ebe23fc3c44ebc67c6d25917300bc68c08 URL:https://git.kernel.org/stable/c/ec3634ebe23fc3c44ebc67c6d25917300bc68c08 MISC:https://git.kernel.org/stable/c/ec36c134dd020d28e312c2f1766f85525e747aab URL:https://git.kernel.org/stable/c/ec36c134dd020d28e312c2f1766f85525e747aab
Assigning CNA
kernel.org
Date Record Created
20240220	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240220)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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