CVE-2026-90388
Published Sep 17, 2026
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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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.
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.