ntfs: fix kmap_local_page() usage in compress

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-90134
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:17:05 UTC
Updated2026-10-19 09:19:03 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ntfs: fix kmap_local_page() usage in compress Several compressed I/O paths discard the address returned by kmap_local_page() and later access or unmap the page using page_address(). This is invalid for highmem pages, and local mappings must also be unmapped using the address returned by kmap_local_page(). Map each destination page in ntfs_decompress() only while producing the current sub-block. Use memcpy_from_page(), memcpy_to_page(), and memzero_page() for the other page accesses. Remove unnecessary local mappings from ntfs_write_cb(), where pages are accessed through the vmap() mapping.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 495e90fa334828d4119061e2726af51d0a0fb4ed 950e2ecc7aec21af24b05bc661a097a81c670409 git Not specified
CNA Linux Linux affected 495e90fa334828d4119061e2726af51d0a0fb4ed 6e03fbd5f772ad24ea64f7632e4d0d73184787ca git Not specified
CNA Linux Linux affected 7.1 Not specified
CNA Linux Linux unaffected 7.1 semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/950e2ecc7aec21af24b05bc661a097a81c670409 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6e03fbd5f772ad24ea64f7632e4d0d73184787ca 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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