CVE-2024-36913: Drivers: hv: vmbus: Leak pages if set_memory_encrypted() fails
In the Linux kernel, the following vulnerability has been resolved:
Drivers: hv: vmbus: Leak pages if setmemoryencrypted() fails
In CoCo VMs it is possible for the untrusted host to cause setmemoryencrypted() or setmemorydecrypted() 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.
VMBus code could free decrypted pages if setmemoryencrypted()/decrypted() fails. Leak the pages if this happens.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.223-1Fixed in 5.10.234-1Fixed in 6.12.25-1Fixed in 6.12.27-1
Event History
Frequently Asked Questions
What is the severity of CVE-2024-36913?
CVE-2024-36913 has a severity rating that indicates potential risks associated with memory management in the Linux kernel.
How do I fix CVE-2024-36913?
To fix CVE-2024-36913, upgrade to the patched versions: 6.12.11-1 or 6.12.12-1 in your Debian package.
What systems are affected by CVE-2024-36913?
CVE-2024-36913 affects specific versions of the Linux kernel, particularly within certain Debian packages.
What is the vulnerability type of CVE-2024-36913?
CVE-2024-36913 is classified as a memory management vulnerability related to the handling of encrypted memory.
Is there a workaround for CVE-2024-36913?
Currently, there is no widely recommended workaround for CVE-2024-36913; the best action is to apply the necessary updates.