CVE - CVE-2024-36909

CVE-ID
CVE-2024-36909	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: Drivers: hv: vmbus: Don't free ring buffers that couldn't be re-encrypted In CoCo VMs it is possible for the untrusted host to cause set_memory_encrypted() or set_memory_decrypted() to fail such that an error is returned and the resulting memory is shared. Callers need to take care to handle these errors to avoid returning decrypted (shared) memory to the page allocator, which could lead to functional or security issues. The VMBus ring buffer code could free decrypted/shared pages if set_memory_decrypted() fails. Check the decrypted field in the struct vmbus_gpadl for the ring buffers to decide whether to free the memory.
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/2f622008bf784a9f5dd17baa19223cc2ac30a039 URL:https://git.kernel.org/stable/c/2f622008bf784a9f5dd17baa19223cc2ac30a039 MISC:https://git.kernel.org/stable/c/30d18df6567be09c1433e81993e35e3da573ac48 URL:https://git.kernel.org/stable/c/30d18df6567be09c1433e81993e35e3da573ac48 MISC:https://git.kernel.org/stable/c/82f9e213b124a7d2bb5b16ea35d570260ef467e0 URL:https://git.kernel.org/stable/c/82f9e213b124a7d2bb5b16ea35d570260ef467e0 MISC:https://git.kernel.org/stable/c/a9212a4e2963a7fbe3864ba33dc551d4ad8d0abb URL:https://git.kernel.org/stable/c/a9212a4e2963a7fbe3864ba33dc551d4ad8d0abb
Assigning CNA
kernel.org
Date Record Created
20240530	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 (20240530)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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