CVE-2022-50756nvme-pci: fix mempool alloc size
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: 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.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
- Deferred
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 943e942e6266f22babee5efeb00f8f672fbff5bd before dfb6d54893d544151e7f480bc44cfe7823f5ad23; from 943e942e6266f22babee5efeb00f8f672fbff5bd before 9141144b37f30e3e7fa024bcfa0a13011e546ba9; from 943e942e6266f22babee5efeb00f8f672fbff5bd before e1777b4286e526c58b4ee699344b0ad85aaf83a0; from 943e942e6266f22babee5efeb00f8f672fbff5bd before b1814724e0d7162bdf4799f2d565381bc2251c63; from 943e942e6266f22babee5efeb00f8f672fbff5bd before c89a529e823d51dd23c7ec0c047c7a454a428541 | CNA record |
References
- https://git.kernel.org/stable/c/dfb6d54893d544151e7f480bc44cfe7823f5ad23
- https://git.kernel.org/stable/c/9141144b37f30e3e7fa024bcfa0a13011e546ba9
- https://git.kernel.org/stable/c/e1777b4286e526c58b4ee699344b0ad85aaf83a0
- https://git.kernel.org/stable/c/b1814724e0d7162bdf4799f2d565381bc2251c63
- https://git.kernel.org/stable/c/c89a529e823d51dd23c7ec0c047c7a454a428541
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.