In the Linux kernel, the following vulnerability has been resolved:
afs: Fix callback service message parsers to pass through -EAGAIN
The AFS filesystem client uses an rxrpc server to listen for callback notifications. Each callback call type handler has a delivery function that parses the incoming request stream, and this should return -EAGAIN the last packet hasnt yet been seen, but all currently queued received data is consumed. afs_extract_data() does this, but the -EAGAIN return is switched to 0 inadvertantly
Fix callback service message parsers to pass through -EAGAIN
References
- https://git.kernel.org/stable/c/09c67a7ded481482155b836c8c7f078a3075f8de
- https://git.kernel.org/stable/c/0acbc09d2aca0432af45cec114f20d55ceafaec4
- https://git.kernel.org/stable/c/0f36469d7ce98b362934113c550d08bb0c784231
- https://git.kernel.org/stable/c/239cd337c9d047e7097f5b2ebbb41ddfb8180bc6
- https://git.kernel.org/stable/c/26b737b3769e92493fe94c34620399d93ca231ae
- https://git.kernel.org/stable/c/5a39b145a8fb49f316e7ec1f29ba51d68095c7e4
- https://git.kernel.org/stable/c/772850871a2e772e26f9d93f1e9ddd413b3eeaa4
- https://git.kernel.org/stable/c/f14dd036fad3d359f26f1282199cec06b3a9362b