{"id":"CVE-2026-98354","published":"2026-10-06T09:18:28.883","lastModified":"2026-10-06T09:18:28.883","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/mad: Fix receive buffer leak when PKey enforcement fails\n\nib_mad_complete_recv() initializes mad_recv_wc->rmpp_list and then runs\nib_mad_enforce_security() before linking recv_buf onto that list.  On\nfailure it calls ib_free_recv_mad(), which only walks rmpp_list and frees\nthe ib_mad_private of every buffer found there.  As the list is still\nempty at that point, nothing is freed at all.\n\nThe caller cannot clean up either: ib_mad_recv_done() sets recv to NULL\nright after ib_mad_complete_recv() returns, assuming the MAD layer took\nownership of the buffer.  Every MAD that fails the PKey check therefore\nleaks one ib_mad_private (about 300 bytes per IB port MAD, ~2K for OPA),\nand a remote node can trigger this repeatedly by sending MADs with a\nwrong PKey.\n\nLink recv_buf onto rmpp_list right after the list is initialized, so the\nerror path has something to free.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/3476c28c9addfa253f505e6bd87f1f5598b961d0","tags":[]},{"url":"https://git.kernel.org/stable/c/39c4ea72a40503e102ae07e6776005f96ca078a6","tags":[]},{"url":"https://git.kernel.org/stable/c/4617c9a856188674dddb0ca66979746d07688579","tags":[]},{"url":"https://git.kernel.org/stable/c/5091e25ec503f7fc02723ca435226467b68caac7","tags":[]},{"url":"https://git.kernel.org/stable/c/752b30e9d339008e5ce7eed412e9446078916129","tags":[]},{"url":"https://git.kernel.org/stable/c/8e2036fb47a5b152d53eadbd35abf311bd34cc7f","tags":[]},{"url":"https://git.kernel.org/stable/c/bad289e42f512646a988f278f536d21547df73f1","tags":[]},{"url":"https://git.kernel.org/stable/c/c0d8df85db146d6275e226cb950023be69dd6c77","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}