Resource Injection Affecting kernel-bootwrapper package, versions *
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Test your applications- Snyk ID SNYK-RHEL7-KERNELBOOTWRAPPER-7209207
- published 4 Jun 2024
- disclosed 30 May 2024
Introduced: 30 May 2024
CVE-2024-36909 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:7 kernel-bootwrapper.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-bootwrapper package and not the kernel-bootwrapper package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
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
- https://access.redhat.com/security/cve/CVE-2024-36909
- https://git.kernel.org/stable/c/2f622008bf784a9f5dd17baa19223cc2ac30a039
- https://git.kernel.org/stable/c/30d18df6567be09c1433e81993e35e3da573ac48
- https://git.kernel.org/stable/c/82f9e213b124a7d2bb5b16ea35d570260ef467e0
- https://git.kernel.org/stable/c/a9212a4e2963a7fbe3864ba33dc551d4ad8d0abb