{"id":"CVE-2026-90134","state":"PUBLISHED","title":"ntfs: fix kmap_local_page() usage in compress","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: fix kmap_local_page() usage in compress\n\nSeveral compressed I/O paths discard the address returned by\nkmap_local_page() and later access or unmap the page using page_address().\nThis is invalid for highmem pages, and local mappings must also be unmapped\nusing the address returned by kmap_local_page().\n\nMap each destination page in ntfs_decompress() only while producing the\ncurrent sub-block. Use memcpy_from_page(), memcpy_to_page(), and\nmemzero_page() for the other page accesses. Remove unnecessary local\nmappings from ntfs_write_cb(), where pages are accessed through the vmap()\nmapping.","publishedAt":"2026-09-17T16:06:33.888Z","updatedAt":"2026-10-19T08:58:32.441Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"495e90fa334828d4119061e2726af51d0a0fb4ed","status":"affected","lessThan":"950e2ecc7aec21af24b05bc661a097a81c670409","versionType":"git"},{"version":"495e90fa334828d4119061e2726af51d0a0fb4ed","status":"affected","lessThan":"6e03fbd5f772ad24ea64f7632e4d0d73184787ca","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs/compress.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.1","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs/compress.c"]}],"references":["https://git.kernel.org/stable/c/950e2ecc7aec21af24b05bc661a097a81c670409","https://git.kernel.org/stable/c/6e03fbd5f772ad24ea64f7632e4d0d73184787ca"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/90xxx/CVE-2026-90134.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90134","state":"PUBLISHED","datePublished":"2026-09-17T16:06:33.888Z","dateUpdated":"2026-10-19T08:58:32.441Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.788Z"},"containers":{"cna":{"title":"ntfs: fix kmap_local_page() usage in compress","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: fix kmap_local_page() usage in compress\n\nSeveral compressed I/O paths discard the address returned by\nkmap_local_page() and later access or unmap the page using page_address().\nThis is invalid for highmem pages, and local mappings must also be unmapped\nusing the address returned by kmap_local_page().\n\nMap each destination page in ntfs_decompress() only while producing the\ncurrent sub-block. Use memcpy_from_page(), memcpy_to_page(), and\nmemzero_page() for the other page accesses. Remove unnecessary local\nmappings from ntfs_write_cb(), where pages are accessed through the vmap()\nmapping."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"495e90fa334828d4119061e2726af51d0a0fb4ed","status":"affected","lessThan":"950e2ecc7aec21af24b05bc661a097a81c670409","versionType":"git"},{"version":"495e90fa334828d4119061e2726af51d0a0fb4ed","status":"affected","lessThan":"6e03fbd5f772ad24ea64f7632e4d0d73184787ca","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs/compress.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.1","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs/compress.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/950e2ecc7aec21af24b05bc661a097a81c670409"},{"url":"https://git.kernel.org/stable/c/6e03fbd5f772ad24ea64f7632e4d0d73184787ca"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:58:32.441Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.1","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.1","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}