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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2024-46689 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: soc: qcom: cmd-db: Map shared memory as WC, not WB Linux does not write into cmd-db region. This region of memory is write protected by XPU. XPU may sometime falsely detect clean cache eviction as "write" into the write protected region leading to secure interrupt which causes an endless loop somewhere in Trust Zone. The only reason it is working right now is because Qualcomm Hypervisor maps the same region as Non-Cacheable memory in Stage 2 translation tables. The issue manifests if we want to use another hypervisor (like Xen or KVM), which does not know anything about those specific mappings. Changing the mapping of cmd-db memory from MEMREMAP_WB to MEMREMAP_WT/WC removes dependency on correct mappings in Stage 2 tables. This patch fixes the issue by updating the mapping to MEMREMAP_WC. I tested this on SA8155P with Xen.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/0ee9594c974368a17e85a431e9fe1c14fb65c278 Patch 
https://git.kernel.org/stable/c/62c2d63605ca25b5db78a347ed303c0a0a77d5b4 Patch 
https://git.kernel.org/stable/c/d9d48d70e922b272875cda60d2ada89291c840cf Patch 
https://git.kernel.org/stable/c/eaff392c1e34fb77cc61505a31b0191e5e46e271 Patch 
https://git.kernel.org/stable/c/ef80520be0ff78ae5ed44cb6eee1525e65bebe70 Patch 
https://git.kernel.org/stable/c/f5a5a5a0e95f36e2792d48e6e4b64e665eb01374 Patch 
https://git.kernel.org/stable/c/f9bb896eab221618927ae6a2f1d566567999839d Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-787 Out-of-bounds Write cwe source acceptance level NIST  

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2024-46689
NVD Published Date:
09/13/2024
NVD Last Modified:
09/20/2024
Source:
kernel.org