CVE ID : CVE-2025-68760<\/p>\n
Published : Jan. 5, 2026, 9:32 a.m. | 53\u00a0minutes ago<\/p>\n
Description : In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
iommu\/amd: Fix potential out-of-bounds read in iommu_mmio_show<\/p>\n
In iommu_mmio_write(), it validates the user-provided offset with the
\ncheck: `iommu->dbg_mmio_offset > iommu->mmio_phys_end – 4`.
\nThis assumes a 4-byte access. However, the corresponding
\nshow handler, iommu_mmio_show(), uses readq() to perform an 8-byte
\n(64-bit) read.<\/p>\n
If a user provides an offset equal to `mmio_phys_end – 4`, the check
\npasses, and will lead to a 4-byte out-of-bounds read.<\/p>\n
Fix this by adjusting the boundary check to use sizeof(u64), which
\ncorresponds to the size of the readq() operation.<\/p>\n
Severity: 0.0 | NA<\/p>\n
Visit the link for more details, such as CVSS details, affected products, timeline, and more…\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"
CVE ID : CVE-2025-68760 Published : Jan. 5, 2026, 9:32 a.m. | 53\u00a0minutes ago Description : 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 …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-75499","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/75499","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=75499"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/75499\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=75499"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=75499"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=75499"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}