CVE-2025-68760: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Fix potential out-of-bounds read in iommu_mmio_show In iommu_mmio_write(), it validates the user-provided offset with the check: `iommu->dbg_mmio_offset > iommu->mmio_phys_end - 4`. This assumes a 4-byte access. However, the corresponding show handler, iommu_mmio_show(), uses readq() to perform an 8-byte (64-bit) read. If a user provides an offset equal to `mmio_phys_end - 4`, the check passes, and will lead to a 4-byte out-of-bounds read. Fix this by adjusting the boundary check to use sizeof(u64), which corresponds to the size of the readq() operation.

Засегнати продукти

• Linux Linux: 7a4ee419e8c144b747a8915856e91a034d7c8f34 преди b959df804c33913dbfdb90750f2d693502b3d126; 7a4ee419e8c144b747a8915856e91a034d7c8f34 преди 0ec4aaf5f3f559716a6559f3d6d9616e9470bed6; 7a4ee419e8c144b747a8915856e91a034d7c8f34 преди a0c7005333f9a968abb058b1d77bbcd7fb7fd1e7
• Linux Linux: 6.17; преди 6.17; 6.17.13 до 6.17.*; 6.18.2 до 6.18.*; 6.19 до *

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2025-68760
• https://nvd.nist.gov/vuln/detail/CVE-2025-68760
• https://git.kernel.org/stable/c/b959df804c33913dbfdb90750f2d693502b3d126
• https://git.kernel.org/stable/c/0ec4aaf5f3f559716a6559f3d6d9616e9470bed6
• https://git.kernel.org/stable/c/a0c7005333f9a968abb058b1d77bbcd7fb7fd1e7