CVE - CVE-2024-58006

CVE-ID
CVE-2024-58006	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: PCI: dwc: ep: Prevent changing BAR size/flags in pci_epc_set_bar() In commit 4284c88fff0e ("PCI: designware-ep: Allow pci_epc_set_bar() update inbound map address") set_bar() was modified to support dynamically changing the backing physical address of a BAR that was already configured. This means that set_bar() can be called twice, without ever calling clear_bar() (as calling clear_bar() would clear the BAR's PCI address assigned by the host). This can only be done if the new BAR size/flags does not differ from the existing BAR configuration. Add these missing checks. If we allow set_bar() to set e.g. a new BAR size that differs from the existing BAR size, the new address translation range will be smaller than the BAR size already determined by the host, which would mean that a read past the new BAR size would pass the iATU untranslated, which could allow the host to read memory not belonging to the new struct pci_epf_bar. While at it, add comments which clarifies the support for dynamically changing the physical address of a BAR. (Which was also missing.)
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/3229c15d6267de8e704b4085df8a82a5af2d63eb URL:https://git.kernel.org/stable/c/3229c15d6267de8e704b4085df8a82a5af2d63eb MISC:https://git.kernel.org/stable/c/3708acbd5f169ebafe1faa519cb28adc56295546 URL:https://git.kernel.org/stable/c/3708acbd5f169ebafe1faa519cb28adc56295546 MISC:https://git.kernel.org/stable/c/b5cacfd067060c75088363ed3e19779078be2755 URL:https://git.kernel.org/stable/c/b5cacfd067060c75088363ed3e19779078be2755
Assigning CNA
kernel.org
Date Record Created
20250227	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 (20250227)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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