CVE-2026-90388
High
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux
PublishedSep 17, 2026
First seenSep 17, 2026
How to fix
Update
- Linux Linuxac9cd0a669b8be5d178dbd471b0d68039dac58b5, db46cb9da83a507d86d2bb080bdb09c865da3d0a, d56c3f955b21e5764c1497e295a5b5d0b3a40470, 06dffc96693083dda3412311406e558cf27f1574, a4ace31d732b657d774e31fb444c0c27d42c78e5, fb0b39287ba894dbdfac2901c51788b63f5c2291, 8c486293ddd0af60991408149fc3e964ea888dc4, af95a0ebc0a0db0762be75f51eadf770bad01aaa, 5.9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 9420139f516d7fbc248ce17f35275cb005ed98ea ≤ v < ac9cd0a669b8be5d178dbd471b0d68039dac58b5, 9420139f516d7fbc248ce17f35275cb005ed98ea ≤ v < db46cb9da83a507d86d2bb080bdb09c865da3d0a, 9420139f516d7fbc248ce17f35275cb005ed98ea ≤ v < d56c3f955b21e5764c1497e295a5b5d0b3a40470, 9420139f516d7fbc248ce17f35275cb005ed98ea ≤ v < 06dffc96693083dda3412311406e558cf27f1574, 9420139f516d7fbc248ce17f35275cb005ed98ea ≤ v < a4ace31d732b657d774e31fb444c0c27d42c78e5, 9420139f516d7fbc248ce17f35275cb005ed98ea ≤ v < fb0b39287ba894dbdfac2901c51788b63f5c2291, 9420139f516d7fbc248ce17f35275cb005ed98ea ≤ v < 8c486293ddd0af60991408149fc3e964ea888dc4, 9420139f516d7fbc248ce17f35275cb005ed98ea ≤ v < af95a0ebc0a0db0762be75f51eadf770bad01aaa, 47184b9ddf184cc9a77cf441943a0fe9b7afa575, 5.8.6 ≤ v < 5.9, 5.9 | ac9cd0a669b8be5d178dbd471b0d68039dac58b5, db46cb9da83a507d86d2bb080bdb09c865da3d0a, d56c3f955b21e5764c1497e295a5b5d0b3a40470, 06dffc96693083dda3412311406e558cf27f1574, a4ace31d732b657d774e31fb444c0c27d42c78e5, fb0b39287ba894dbdfac2901c51788b63f5c2291, 8c486293ddd0af60991408149fc3e964ea888dc4, af95a0ebc0a0db0762be75f51eadf770bad01aaa, 5.9 |
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