Description
In the Linux kernel, the following vulnerability has been resolved:
nvme-pci: fix mempool alloc size
Convert the max size to bytes to match the units of the divisor that calculates the worst-case number of PRP entries.
The result is used to determine how many PRP Lists are required. The code was previously rounding this to 1 list, but we can require 2 in the worst case. In that scenario, the driver would corrupt memory beyond the size provided by the mempool.
While unlikely to occur (you'd need a 4MB in exactly 127 phys segments on a queue that doesn't support SGLs), this memory corruption has been observed by kfence.
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 943e942e6266f22babee5efeb00f8f672fbff5bd, < dfb6d54893d544151e7f480bc44cfe7823f5ad23; >= 943e942e6266f22babee5efeb00f8f672fbff5bd, < 9141144b37f30e3e7fa024bcfa0a13011e546ba9; >= 943e942e6266f22babee5efeb00f8f672fbff5bd, < e1777b4286e526c58b4ee699344b0ad85aaf83a0; >= 943e942e6266f22babee5efeb00f8f672fbff5bd, < b1814724e0d7162bdf4799f2d565381bc2251c63; >= 943e942e6266f22babee5efeb00f8f672fbff5bd, < c89a529e823d51dd23c7ec0c047c7a454a428541 |
| Linux | Linux | 4.18 |
References
- https://git.kernel.org/stable/c/9141144b37f30e3e7fa024bcfa0a13011e546ba9
- https://git.kernel.org/stable/c/b1814724e0d7162bdf4799f2d565381bc2251c63
- https://git.kernel.org/stable/c/c89a529e823d51dd23c7ec0c047c7a454a428541
- https://git.kernel.org/stable/c/dfb6d54893d544151e7f480bc44cfe7823f5ad23
- https://git.kernel.org/stable/c/e1777b4286e526c58b4ee699344b0ad85aaf83a0
Timeline
- Published
- Dec 24, 2025
- Last modified
- Oct 15, 2026
- NVD status
- Deferred