Answer in brief
CVE-2026-80880 records a Unknown severity vulnerability in IB/mlx5: Properly support implicit ODP rereg_mr. 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 | >=ef3642c4f54d3493c92c71faf46139b2473bc532 <cbc9982c8573fb9e35040063aa78c8ebe768a1ff || >=ef3642c4f54d3493c92c71faf46139b2473bc532 <ee914ef54a7e707453ecb43eb30fb0a5c6dd0d69 || >=ef3642c4f54d3493c92c71faf46139b2473bc532 <94f7e50eb6b2ce7fbd9aeac1db22460d2013a3fb || >=ef3642c4f54d3493c92c71faf46139b2473bc532 <eb7cb798e563b3f3b3baeb9cc6f7455764267e50 || >=ef3642c4f54d3493c92c71faf46139b2473bc532 <d4f84bfa089fe71f775d25beb29303e844494c25 || >=ef3642c4f54d3493c92c71faf46139b2473bc532 <5d02b9a2efd11d28d2a8feac7769686b1b871d9c || >=ef3642c4f54d3493c92c71faf46139b2473bc532 <ee7a8335069150c3f1893a697ab30bbeca00d796 | cbc9982c8573fb9e35040063aa78c8ebe768a1ff, ee914ef54a7e707453ecb43eb30fb0a5c6dd0d69, 94f7e50eb6b2ce7fbd9aeac1db22460d2013a3fb, eb7cb798e563b3f3b3baeb9cc6f7455764267e50, d4f84bfa089fe71f775d25beb29303e844494c25, 5d02b9a2efd11d28d2a8feac7769686b1b871d9c, ee7a8335069150c3f1893a697ab30bbeca00d796 |
| Linux/Linuxgeneric | 5.11 | Not reported |
Published upstream
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 4, 2026
In the Linux kernel, the following vulnerability has been resolved: IB/mlx5: Properly support implicit ODP rereg_mr Due to all the child mkeys in the implicit ODP configuration we cannot change anything in place for the parent mkey. Instead the whole thing needs to be rebuilt if any change is requested. If the user does not specify a translation then force the implicit values which will then fall through the logic into mlx5_ib_reg_user_mr() to allocate a completely new MR. Since implicit children were also touching the mr->pd, this removes another case where the access was racy.
Quoted source text, attributed separately from HOL analysis.