CVE-2026-90387
CVE CVE-2026-90387EUVD EUVD-2026-82048Published 2026-09-17T16:09:22.000ZLast changed 2026-09-18T17:55:01.000ZCVSS 7.8
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: swiotlb: Preserve allocation virtual address for dynamic pools swiotlb_alloc_tlb() can allocate from the DMA atomic pool when a decrypted pool is needed from atomic context. With CONFIG_DMA_DIRECT_REMAP, the atomic pool is backed by remapped virtual addresses, which are not the same as the direct-map addresses returned by phys_to_virt(). swiotlb_init_io_tlb_pool() currently reconstructs the pool virtual address from the physical start address. For atomic-pool backed allocations this stores the wrong address in pool->vaddr. Later, swiotlb_free_tlb() passes that address to dma_free_from_pool(), which will fail to recognize the chunk Pass the virtual address returned by the allocation path into swiotlb_init_io_tlb_pool(), and store that address in pool->vaddr. This keeps the pool free path using the same virtual address as the allocator.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux 79636caad3618e2b38457f6e298c9b31ba82b489 <45507dcb0847e96add4455274b12df0eca6590b4; 79636caad3618e2b38457f6e298c9b31ba82b489 <57d29044d0f29a76c6ec0c112c8c7371d5608dc7; 79636caad3618e2b38457f6e298c9b31ba82b489 <68bf3ebd8e7020dae58e8aa14c7d482738bff9a8; 79636caad3618e2b38457f6e298c9b31ba82b489 <35e0103177826430b5df888b1506239d41e76ab5; patch: 6.6.157; patch: 6.12.110; patch: 6.18.52; patch: 7.2.6; 79636caad3618e2b38457f6e298c9b31ba82b489 <c1f4d7763cdf1b9e0d35c14aa6f52d0512a36319; 6.6; patch: 7.3-rc1; patch: 0
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
Does this concern one of your customers?
This page cannot answer that — it does not know your estate. Whoever has recorded their environments gets the answer the morning after publication, together with a paragraph they can forward to the customer unedited.
Try it for 28 daysPatchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.