CVE-2024-36911

Critical

Description

In the Linux kernel, the following vulnerability has been resolved: hv_netvsc: Don't free decrypted memory 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 netvsc driver could free decrypted/shared pages if set_memory_decrypted() fails. Check the decrypted field in the gpadl to decide whether to free the memory.

SeverityCritical
CVSS9.8
Exploit probability—
ProductLinux Kernel
PublishedMay 30, 2024
First seenMay 30, 2024

How to fix

Update
  • linux linux_kernel6.6.31, 6.8.10 or later

Affected products

ProductAffected versionsFixed in
linux linux_kernelv < 6.6.31, 6.7 ≤ v < 6.8.10, 6.96.6.31, 6.8.10

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CVE-2024-36911 · Linux Kernel · Dark Radar