VYPR
← All advisories
Critical severity9.3NVD Advisory· Published May 30, 2024· Updated Aug 4, 2026

CVE-2024-36909

CVE-2024-36909

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

103

Patches

Vulnerability mechanics

References

4

News mentions

0

No linked articles in our index yet.