Bug 2355478 (CVE-2022-49756)

Summary: CVE-2022-49756 kernel: phy: usb: sunplus: Fix potential null-ptr-deref in sp_usb_phy_probe()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-03-27 17:03:28 UTC 
In the Linux kernel, the following vulnerability has been resolved:

phy: usb: sunplus: Fix potential null-ptr-deref in sp_usb_phy_probe()

sp_usb_phy_probe() will call platform_get_resource_byname() that may fail
and return NULL. devm_ioremap() will use usbphy->moon4_res_mem->start as
input, which may causes null-ptr-deref. Check the ret value of
platform_get_resource_byname() to avoid the null-ptr-deref.
Comment 1 Robb Gatica 2025-03-27 22:49:11 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025032701-CVE-2022-49756-7fd9@gregkh/T
Comment 3 Avinash Hanwate 2025-03-28 05:21:58 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025032701-CVE-2022-49756-7fd9@gregkh/T