Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters When srpt_alloc_rw_ctxs() fails partway through a multi-buffer indirect descriptor, the unwind path destroys RDMA contexts but leaves stale n_rw_ctx and n_rdma values (and a dangling rw_ctxs pointer). Later sq_wr_avail accounting in srpt_queue_response() or srpt_write_pending() can then subtract the wrong number of send queue credits. Reset the counters and clear rw_ctxs after freeing the heap allocation before returning an error.

Quick Facts

References

• https://git.kernel.org/stable/c/717ab4d0614e9446bf8e2de62294…
• https://git.kernel.org/stable/c/af00051dbc9f467d4840ec709680…
• https://git.kernel.org/stable/c/af073bd245180393bcb15d33d399…
• https://git.kernel.org/stable/c/b38f98e176050850f41bb6415f3a…
• https://git.kernel.org/stable/c/bd02d644bd19a2795c018635d273…
• https://git.kernel.org/stable/c/be1478849e1abb1e12dc12e14cdb…
• https://git.kernel.org/stable/c/f1f2252da52cdda912da9993f39f…
• https://git.kernel.org/stable/c/f65f45dfa1e6e2eaa9e11c8b8ce8…

External Resources