CVE-2026-90388 (CVSS 7.8)

Description

In the Linux kernel, the following vulnerability has been resolved: iommu/dma: Check atomic pool allocation result directly The non-blocking, non-coherent allocation path uses dma_alloc_from_pool(), which returns the allocated page and fills cpu_addr only on success. Do not rely on cpu_addr to detect allocation failure in this path. Check the returned page directly before using it for the IOMMU mapping.

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0016

Probability of exploitation

0.05%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/06dffc96693083dda3412311406e558cf27f1574 https://git.kernel.org/stable/c/8c486293ddd0af60991408149fc3e964ea888dc4 https://git.kernel.org/stable/c/a4ace31d732b657d774e31fb444c0c27d42c78e5 https://git.kernel.org/stable/c/ac9cd0a669b8be5d178dbd471b0d68039dac58b5 https://git.kernel.org/stable/c/af95a0ebc0a0db0762be75f51eadf770bad01aaa https://git.kernel.org/stable/c/d56c3f955b21e5764c1497e295a5b5d0b3a40470 https://git.kernel.org/stable/c/db46cb9da83a507d86d2bb080bdb09c865da3d0a https://git.kernel.org/stable/c/fb0b39287ba894dbdfac2901c51788b63f5c2291

Frequently Asked Questions

What is CVE-2026-90388? +

In the Linux kernel, the following vulnerability has been resolved: iommu/dma: Check atomic pool allocation result directly The non-blocking, non-coherent allocation path uses dma_alloc_from_pool(), which returns the allocated page and fills cpu_addr only on success. Do not rely on cpu_addr to detect allocation failure in this path. Check the returned page directly before using it for the IOMMU mapping. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-90388? +

CVE-2026-90388 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0016, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-90388? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

CVE-2026-90388