CVE-2026-74396RDMA/mlx5: Fix UMR XLT cleanup on ODP populate failure
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1efe8c0670d6a6883faa09c9abc746c741f5664a before ffa85a2c197935ace6f1634ad9eb0a44bc615670; from 1efe8c0670d6a6883faa09c9abc746c741f5664a before 9619909d4869afe720904c6888a289b9ac3055b8; 1efe8c0670d6a6883faa09c9abc746c741f5664a builds before 1eae35b37923cb71b0cb5136d00671440d488b9f | CNA record |
References
- https://git.kernel.org/stable/c/ffa85a2c197935ace6f1634ad9eb0a44bc615670
- https://git.kernel.org/stable/c/9619909d4869afe720904c6888a289b9ac3055b8
- https://git.kernel.org/stable/c/1eae35b37923cb71b0cb5136d00671440d488b9f
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.