{"id":"CVE-2026-46072","state":"PUBLISHED","title":"ntfs3: add buffer boundary checks to run_unpack()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nntfs3: add buffer boundary checks to run_unpack()\n\nrun_unpack() checks `run_buf < run_last` at the top of the while loop\nbut then reads size_size and offset_size bytes via run_unpack_s64()\nwithout verifying they fit within the remaining buffer.  A crafted NTFS\nimage with truncated run data in an MFT attribute triggers an OOB heap\nread of up to 15 bytes when the filesystem is mounted.\n\nAdd boundary checks before each run_unpack_s64() call to ensure the\ndeclared field size does not exceed the remaining buffer.\n\nFound by fuzzing with a source-patched harness (LibAFL + QEMU).","publishedAt":"2026-05-27T12:58:00.299Z","updatedAt":"2026-06-14T17:52:15.329Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","status":"affected","lessThan":"bbad75336870b51b81979b97613746237fcb02fe","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","status":"affected","lessThan":"425de2aba0d061b3e715d51a3b1992c112ed5b99","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","status":"affected","lessThan":"bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","status":"affected","lessThan":"e64f7dfcaff79e7dfff9121a382dd77f9b462f62","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","status":"affected","lessThan":"d3012690a7065d9ca86521a525ad11e8af491d45","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","status":"affected","lessThan":"41aadf5cb482793a24e05aa136224e179a778586","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","status":"affected","lessThan":"b62567bca47408e6739dee75f02a2113548af875","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs3/run.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.140","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.86","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.27","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.4","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs3/run.c"]}],"references":["https://git.kernel.org/stable/c/bbad75336870b51b81979b97613746237fcb02fe","https://git.kernel.org/stable/c/425de2aba0d061b3e715d51a3b1992c112ed5b99","https://git.kernel.org/stable/c/bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9","https://git.kernel.org/stable/c/e64f7dfcaff79e7dfff9121a382dd77f9b462f62","https://git.kernel.org/stable/c/d3012690a7065d9ca86521a525ad11e8af491d45","https://git.kernel.org/stable/c/41aadf5cb482793a24e05aa136224e179a778586","https://git.kernel.org/stable/c/b62567bca47408e6739dee75f02a2113548af875"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46072.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46072","state":"PUBLISHED","datePublished":"2026-05-27T12:58:00.299Z","dateUpdated":"2026-06-14T17:52:15.329Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.095Z"},"containers":{"cna":{"title":"ntfs3: add buffer boundary checks to run_unpack()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nntfs3: add buffer boundary checks to run_unpack()\n\nrun_unpack() checks `run_buf < run_last` at the top of the while loop\nbut then reads size_size and offset_size bytes via run_unpack_s64()\nwithout verifying they fit within the remaining buffer.  A crafted NTFS\nimage with truncated run data in an MFT attribute triggers an OOB heap\nread of up to 15 bytes when the filesystem is mounted.\n\nAdd boundary checks before each run_unpack_s64() call to ensure the\ndeclared field size does not exceed the remaining buffer.\n\nFound by fuzzing with a source-patched harness (LibAFL + QEMU)."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","status":"affected","lessThan":"bbad75336870b51b81979b97613746237fcb02fe","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","status":"affected","lessThan":"425de2aba0d061b3e715d51a3b1992c112ed5b99","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","status":"affected","lessThan":"bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","status":"affected","lessThan":"e64f7dfcaff79e7dfff9121a382dd77f9b462f62","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","status":"affected","lessThan":"d3012690a7065d9ca86521a525ad11e8af491d45","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","status":"affected","lessThan":"41aadf5cb482793a24e05aa136224e179a778586","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","status":"affected","lessThan":"b62567bca47408e6739dee75f02a2113548af875","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs3/run.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.140","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.86","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.27","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.4","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs3/run.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/bbad75336870b51b81979b97613746237fcb02fe"},{"url":"https://git.kernel.org/stable/c/425de2aba0d061b3e715d51a3b1992c112ed5b99"},{"url":"https://git.kernel.org/stable/c/bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9"},{"url":"https://git.kernel.org/stable/c/e64f7dfcaff79e7dfff9121a382dd77f9b462f62"},{"url":"https://git.kernel.org/stable/c/d3012690a7065d9ca86521a525ad11e8af491d45"},{"url":"https://git.kernel.org/stable/c/41aadf5cb482793a24e05aa136224e179a778586"},{"url":"https://git.kernel.org/stable/c/b62567bca47408e6739dee75f02a2113548af875"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-14T17:52:15.329Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.6.140"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.12.86"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.18.27"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.0.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}