CVE-2024-36912
Linux Kernel vulnerability
- Published30 May 2024
Description
In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Track decrypted status in vmbus_gpadl 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. In order to make sure callers of vmbus_establish_gpadl() and vmbus_teardown_gpadl() don't return decrypted/shared pages to allocators, add a field in struct vmbus_gpadl to keep track of the decryption status of the buffers. This will allow the callers to know if they should free or leak the pages.
CVSS 3.1 breakdown
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HAffected products
Remediation
References
Related CVEs
Recent high-severity vulnerabilities sharing a weakness type.
Frequently asked
Is CVE-2024-36912 being actively exploited?
CVE-2024-36912 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.97%.
How severe is CVE-2024-36912?
CVE-2024-36912 has a CVSS 3.1 base score of 9.6, rated critical. EPSS estimates a 0.97% probability of exploitation.
Which products are affected by CVE-2024-36912?
Affected products include Linux Kernel.
How do I fix CVE-2024-36912?
Upgrade affected software to a fixed version, for example Linux Kernel 6.1.91 or later, then confirm no affected versions remain in your inventory.
How Secuno handles this
Secuno correlates vulnerabilities like CVE-2024-36912 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.
Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.