Bugzilla – Bug 1225717
VUL-0: CVE-2024-36910: kernel: uio_hv_generic: Don't free decrypted memory
Last modified: 2024-07-10 19:59:14 UTC
In the Linux kernel, the following vulnerability has been resolved: uio_hv_generic: 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 VMBus device UIO 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. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-36910 https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-36910.mbox https://git.kernel.org/stable/c/dabf12bf994318d939f70d47cfda30e47abb2c54 https://git.kernel.org/stable/c/6466a0f6d235c8a18c602cb587160d7e49876db9 https://git.kernel.org/stable/c/fe2c58602354fbd60680dc42ac3a0b772cda7d23 https://git.kernel.org/stable/c/3d788b2fbe6a1a1a9e3db09742b90809d51638b7 https://www.cve.org/CVERecord?id=CVE-2024-36910
fixes submitted to for-next.
security-team@suse.de