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Test your applicationsThere is no fixed version for RHEL:8
kernel-devel
.
Note: Versions mentioned in the description apply only to the upstream kernel-devel
package and not the kernel-devel
package as distributed by RHEL
.
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for RHEL:8
relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
vsock: Do not allow binding to VMADDR_PORT_ANY
It is possible for a vsock to autobind to VMADDR_PORT_ANY. This can cause a use-after-free when a connection is made to the bound socket. The socket returned by accept() also has port VMADDR_PORT_ANY but is not on the list of unbound sockets. Binding it will result in an extra refcount decrement similar to the one fixed in fcdd2242c023 (vsock: Keep the binding until socket destruction).
Modify the check in __vsock_bind_connectible() to also prevent binding to VMADDR_PORT_ANY.