Answer in brief
CVE-2026-74396 records a Unknown severity vulnerability in RDMA/mlx5: Fix UMR XLT cleanup on ODP populate failure. 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 | >=1efe8c0670d6a6883faa09c9abc746c741f5664a <ffa85a2c197935ace6f1634ad9eb0a44bc615670 || >=1efe8c0670d6a6883faa09c9abc746c741f5664a <9619909d4869afe720904c6888a289b9ac3055b8 || >=1efe8c0670d6a6883faa09c9abc746c741f5664a <1eae35b37923cb71b0cb5136d00671440d488b9f | ffa85a2c197935ace6f1634ad9eb0a44bc615670, 9619909d4869afe720904c6888a289b9ac3055b8, 1eae35b37923cb71b0cb5136d00671440d488b9f |
| Linux/Linuxgeneric | 6.16 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix UMR XLT cleanup on ODP populate failure mlx5r_umr_update_xlt() allocates and DMA maps an XLT buffer with mlx5r_umr_create_xlt(). The buffer is released by the common cleanup path through mlx5r_umr_unmap_free_xlt(). After mlx5_odp_populate_xlt() became fallible, its error path returned directly and skipped that cleanup. This leaks the XLT DMA mapping and buffer. If the emergency XLT page was used, it also leaves xlt_emergency_page_mutex locked. Break out of the loop so execution falls through the existing cleanup path.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-74396 records a Unknown severity vulnerability in RDMA/mlx5: Fix UMR XLT cleanup on ODP populate failure. 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 | >=1efe8c0670d6a6883faa09c9abc746c741f5664a <ffa85a2c197935ace6f1634ad9eb0a44bc615670 || >=1efe8c0670d6a6883faa09c9abc746c741f5664a <9619909d4869afe720904c6888a289b9ac3055b8 || >=1efe8c0670d6a6883faa09c9abc746c741f5664a <1eae35b37923cb71b0cb5136d00671440d488b9f | ffa85a2c197935ace6f1634ad9eb0a44bc615670, 9619909d4869afe720904c6888a289b9ac3055b8, 1eae35b37923cb71b0cb5136d00671440d488b9f |
| Linux/Linuxgeneric | 6.16 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix UMR XLT cleanup on ODP populate failure mlx5r_umr_update_xlt() allocates and DMA maps an XLT buffer with mlx5r_umr_create_xlt(). The buffer is released by the common cleanup path through mlx5r_umr_unmap_free_xlt(). After mlx5_odp_populate_xlt() became fallible, its error path returned directly and skipped that cleanup. This leaks the XLT DMA mapping and buffer. If the emergency XLT page was used, it also leaves xlt_emergency_page_mutex locked. Break out of the loop so execution falls through the existing cleanup path.
Quoted source text, attributed separately from HOL analysis.