CVE-2026-97441
CVE CVE-2026-97441EUVD EUVD-2026-86054Published 2026-09-24T16:03:54.000ZLast changed 2026-09-25T12:44:18.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: ata: ahci: fail probe if BAR too small for claimed ports When an AHCI controller is disabled in BIOS, its HOST_CAP register may contain a bogus value, e.g. 0xFFFFFFFF. Since CAP.NP (Number of Ports) is a zeroes based 5-bit register field, a value of 0x1f means 32 ports. If CAP.NP claims more ports than can physically fit within the mapped BAR region, accessing port registers beyond the BAR boundary causes a kernel panic. Add validation in ahci_init_one() to check that the BAR size is sufficient for the number of ports claimed in CAP.NP. The check calculates the required MMIO size as: required_size = 0x100 (global registers) + max_ports * 0x80 If required_size exceeds the actual BAR size, the probe fails with -ENODEV, preventing the panic and providing a clear error message. [cassel: commit log]
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 patch: 6.18.53; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c4086c6e1af757e1ff26fa2d2926b3ec0195de79; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <df262c828b616450eb351349e91c63447551bd01; 2.6.12; patch: 7.2; patch: 6.12.111; patch: 0; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f2e291043c37a896d7f9797e25a356dceb030177
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.