What is CVE-2022-50756?

CVE-2022-50756 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 4.18 onward and patched in 5.10.163, 5.15.87, 6.0.17 and others. CVE-2022-50756 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-50756?

CVE-2022-50756 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2022-50756?

Yes, CVE-2022-50756 has been patched. Fixed versions include 5.10.163, 5.15.87, 6.0.17 and others. If you are running Linux kernel 4.18 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-50756 actively exploited?

CVE-2022-50756 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-50756

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.

Package Linux Kernel

Published 2025-12-24

Last modified 2026-04-15

Patch available

Yes

Affected versions

Linux kernel versions 4.18 and later are affected. Fixed in 5.10.163, 5.15.87, 6.0.17, 6.1.3, 6.2 and their respective stable series.

Affected from

≥ 4.18

Fixed in

✓ 5.10.163 5.10.x ✓ 5.15.87 5.15.x ✓ 6.0.17 6.0.x ✓ 6.1.3 6.1.x ✓ 6.2

References

The following references provide additional information about CVE-2022-50756 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/9141144b37f30e3e7fa024bcfa0a13011e546ba9
Patch
Kernel patch commit
https://git.kernel.org/stable/c/b1814724e0d7162bdf4799f2d565381bc2251c63
Patch
Kernel patch commit
https://git.kernel.org/stable/c/c89a529e823d51dd23c7ec0c047c7a454a428541
Patch

5 patch commits total View all on NVD

Frequently asked questions

What is CVE-2022-50756?

CVE-2022-50756 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.18 onward and has been patched in 5.10.163, 5.15.87, 6.0.17 and others. CVE-2022-50756 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2022-50756?

Yes — CVE-2022-50756 has been patched. Fixed versions include 5.10.163, 5.15.87, 6.0.17 and others. If you are running Linux kernel 4.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-50756 actively exploited?

No — CVE-2022-50756 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.