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Vulnerabilities CVE-2026-74396

CVE-2026-74396

None
Open
TLP:CLEAR

RDMA/mlx5: Fix UMR XLT cleanup on ODP populate failure

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Description

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.

Details

Confidence
90%
Published
Aug 15, 2026
Last Modified
Aug 15, 2026
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