Answer in brief
CVE-2026-98354 records a Unknown severity vulnerability in RDMA/mad: Fix receive buffer leak when PKey enforcement fails. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=47a2b338fe63200d716d2e24131cdb49f17c77da <4617c9a856188674dddb0ca66979746d07688579 || >=47a2b338fe63200d716d2e24131cdb49f17c77da <8e2036fb47a5b152d53eadbd35abf311bd34cc7f || >=47a2b338fe63200d716d2e24131cdb49f17c77da <bad289e42f512646a988f278f536d21547df73f1 || >=47a2b338fe63200d716d2e24131cdb49f17c77da <752b30e9d339008e5ce7eed412e9446078916129 || >=47a2b338fe63200d716d2e24131cdb49f17c77da <39c4ea72a40503e102ae07e6776005f96ca078a6 || >=47a2b338fe63200d716d2e24131cdb49f17c77da <5091e25ec503f7fc02723ca435226467b68caac7 || >=47a2b338fe63200d716d2e24131cdb49f17c77da <c0d8df85db146d6275e226cb950023be69dd6c77 || >=47a2b338fe63200d716d2e24131cdb49f17c77da <3476c28c9addfa253f505e6bd87f1f5598b961d0 | 4617c9a856188674dddb0ca66979746d07688579, 8e2036fb47a5b152d53eadbd35abf311bd34cc7f, bad289e42f512646a988f278f536d21547df73f1, 752b30e9d339008e5ce7eed412e9446078916129, 39c4ea72a40503e102ae07e6776005f96ca078a6, 5091e25ec503f7fc02723ca435226467b68caac7, c0d8df85db146d6275e226cb950023be69dd6c77, 3476c28c9addfa253f505e6bd87f1f5598b961d0 |
| Linux/Linuxgeneric | 4.13 | Not reported |
Published upstream
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 6, 2026
In the Linux kernel, the following vulnerability has been resolved: RDMA/mad: Fix receive buffer leak when PKey enforcement fails ib_mad_complete_recv() initializes mad_recv_wc->rmpp_list and then runs ib_mad_enforce_security() before linking recv_buf onto that list. On failure it calls ib_free_recv_mad(), which only walks rmpp_list and frees the ib_mad_private of every buffer found there. As the list is still empty at that point, nothing is freed at all. The caller cannot clean up either: ib_mad_recv_done() sets recv to NULL right after ib_mad_complete_recv() returns, assuming the MAD layer took ownership of the buffer. Every MAD that fails the PKey check therefore leaks one ib_mad_private (about 300 bytes per IB port MAD, ~2K for OPA), and a remote node can trigger this repeatedly by sending MADs with a wrong PKey. Link recv_buf onto rmpp_list right after the list is initialized, so the error path has something to free.
Quoted source text, attributed separately from HOL analysis.