CVE - CVE-2022-49661

CVE-ID
CVE-2022-49661	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: can: gs_usb: gs_usb_open/close(): fix memory leak The gs_usb driver appears to suffer from a malady common to many USB CAN adapter drivers in that it performs usb_alloc_coherent() to allocate a number of USB request blocks (URBs) for RX, and then later relies on usb_kill_anchored_urbs() to free them, but this doesn't actually free them. As a result, this may be leaking DMA memory that's been used by the driver. This commit is an adaptation of the techniques found in the esd_usb2 driver where a similar design pattern led to a memory leak. It explicitly frees the RX URBs and their DMA memory via a call to usb_free_coherent(). Since the RX URBs were allocated in the gs_can_open(), we remove them in gs_can_close() rather than in the disconnect function as was done in esd_usb2. For more information, see the 928150fad41b ("can: esd_usb2: fix memory leak").
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/0e60230bc64355c80abe993d1719fdb318094e20 URL:https://git.kernel.org/stable/c/0e60230bc64355c80abe993d1719fdb318094e20 MISC:https://git.kernel.org/stable/c/2bda24ef95c0311ab93bda00db40486acf30bd0a URL:https://git.kernel.org/stable/c/2bda24ef95c0311ab93bda00db40486acf30bd0a MISC:https://git.kernel.org/stable/c/339fa9f80d3b94177a7a459c6d115d3b56007d5a URL:https://git.kernel.org/stable/c/339fa9f80d3b94177a7a459c6d115d3b56007d5a MISC:https://git.kernel.org/stable/c/6f655b5e13fa4b27e915b6c209ac0da74fd75963 URL:https://git.kernel.org/stable/c/6f655b5e13fa4b27e915b6c209ac0da74fd75963 MISC:https://git.kernel.org/stable/c/c1d806bc29ff7ffe0e2a023583c8720ed96cb0b0 URL:https://git.kernel.org/stable/c/c1d806bc29ff7ffe0e2a023583c8720ed96cb0b0 MISC:https://git.kernel.org/stable/c/d0b8e223998866b3e7b2895927d4e9689b0a80d8 URL:https://git.kernel.org/stable/c/d0b8e223998866b3e7b2895927d4e9689b0a80d8 MISC:https://git.kernel.org/stable/c/d91492638b054f4a359621ef216242be5973ed6b URL:https://git.kernel.org/stable/c/d91492638b054f4a359621ef216242be5973ed6b MISC:https://git.kernel.org/stable/c/ffb6cc6601ec7c8fa963dcf76025df4a02f2cf5c URL:https://git.kernel.org/stable/c/ffb6cc6601ec7c8fa963dcf76025df4a02f2cf5c
Assigning CNA
kernel.org
Date Record Created
20250226	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 (20250226)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
This is an record on the CVE List, which provides common identifiers for publicly known cybersecurity vulnerabilities.
Search CVE Using Keywords: You can also search by reference using the CVE Reference Maps.
For More Information: CVE Request Web Form (select "Other" from dropdown)