CVE-2026-46105
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
scsi: mpt3sas: Limit NVMe request size to 2 MiB
The HBA firmware reports NVMe MDTS values based on the underlying drive capability. However, because the driver allocates a fixed 4K buffer for the PRP list, accommodating at most 512 entries, the driver supports a maximum I/O transfer size of 2 MiB.
Limit max_hw_sectors to the smaller of the reported MDTS and the 2 MiB driver limit to prevent issuing oversized I/O that may lead to a kernel oops.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 9b8b84879d4adc506b0d3944e20b28d9f3f6994b < 45dcc815fc5539e88154315f36cbcb11d3a52fc2 | affected |
| Linux | Linux | 9b8b84879d4adc506b0d3944e20b28d9f3f6994b < e5f9824817c6358b9f9738bdb92dec9e4e794d3c | affected |
| Linux | Linux | 9b8b84879d4adc506b0d3944e20b28d9f3f6994b < 04631f55afc543d5431a2bdee7f6cc0f2c0debe7 | affected |
| Linux | Linux | 6.17 | affected |
| Linux | Linux | 0 < 6.17 | unaffected |
| Linux | Linux | 6.18.30 <= 6.18.* | unaffected |
| Linux | Linux | 7.0.7 <= 7.0.* | unaffected |
| Linux | Linux | 7.1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/45dcc815fc5539e88154315f36cbcb11d3a52fc2
- https://git.kernel.org/stable/c/e5f9824817c6358b9f9738bdb92dec9e4e794d3c
- https://git.kernel.org/stable/c/04631f55afc543d5431a2bdee7f6cc0f2c0debe7
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