{"id":"CVE-2026-90118","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: fix off-by-one page overflow in ntfs_decompress()\n\nThe per-token range check in ntfs_decompress() uses\n\n\tif (cb >= cb_sb_end || dp_addr > dp_sb_end)\n\t\tbreak;\n\nso …","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: fix off-by-one page overflow in ntfs_decompress()\n\nThe per-token range check in ntfs_decompress() uses\n\n\tif (cb >= cb_sb_end || dp_addr > dp_sb_end)\n\t\tbreak;\n\nso …","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 < b42644e425fed4a5cd6c88372655da5c1b52c666","Linux >= 1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 < 98716c9fce21f6c8a9d71e08cf53e7504fa562f4","Linux 7.1"],"published":"2026-09-17","updated":"2026-09-18","sourceUpdated":"2026-09-18T18:17:42.627","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90118","references":[{"url":"https://git.kernel.org/stable/c/98716c9fce21f6c8a9d71e08cf53e7504fa562f4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b42644e425fed4a5cd6c88372655da5c1b52c666","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00162,"epssPercentile":0.0581,"ingestedAt":"2026-09-17T16:21:47.885Z","slug":"CVE-2026-90118","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nntfs: fix off-by-one page overflow in ntfs_decompress()\n\nThe per-token range check in ntfs_decompress() uses\n\n\tif (cb >= cb_sb_end || dp_addr > dp_sb_end)\n\t\tbreak;\n\nso dp_addr == dp_sb_end falls through to the symbol copy\n`*dp_addr++ = *cb++`, writing one byte past the destination page.  Since\nNTFS_SB_SIZE == PAGE_SIZE the destination is a single page, so the byte\nlands in the adjacent page, and *dest_ofs is left one past the sub-block\nend (the later `*dest_ofs &= ~PAGE_MASK` then yields 1, not 0, so the page\nis never finalized and later sub-blocks keep writing further past it).  A\ncorrupted compressed $DATA attribute thus produces a bounded run of\nout-of-bounds writes when the file is read.\n\nBreak as soon as dp_addr reaches dp_sb_end; a full sub-block still\ncompletes, as its final copy advances dp_addr to exactly dp_sb_end.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":207127,"id":"CVE-2026-90118","ts":1789757334230,"field":"cvss","old":null,"new":"7.8"},{"seq":207126,"id":"CVE-2026-90118","ts":1789757334230,"field":"severity","old":"none","new":"high"}]}