{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72159","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-09T03:40:39.909Z","datePublished":"2026-08-15T05:53:28.205Z","dateUpdated":"2026-08-17T05:09:19.690Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T05:09:19.690Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: reject non-inline dinodes with i_size and zero i_clusters\n\nOn a volume mounted without OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC, a\nnon-inline regular file with non-zero i_size and zero i_clusters is\nstructurally malformed: the extent map declares no allocated clusters yet\nthe size header claims content exists.  Keep rejecting that shape, but\nexpress it through a shared predicate so the same invariant is available\nto normal inode reads and online filecheck.\n\nThe same zero-cluster shape is also malformed for non-inline directories. \nocfs2 directory growth allocates backing storage before advancing i_size,\nand ocfs2_dir_foreach_blk_el() later walks until ctx->pos reaches\ni_size_read(inode).  A forged directory dinode with a huge i_size and no\nclusters would repeatedly fail on holes while advancing through the\nclaimed size.\n\nSparse regular files remain exempt: on sparse-alloc volumes, truncate can\nlegitimately grow i_size without allocating clusters.  System inodes and\ninline-data dinodes also retain their separate storage rules.\n\nMirror the check in ocfs2_filecheck_validate_inode_block() as well. \nfilecheck reports through its own error namespace, so malformed\nsize/cluster state is logged as a filecheck invalid-inode result rather\nthan via ocfs2_error(), but it must not proceed into\nocfs2_populate_inode()."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ocfs2/inode.c"],"versions":[{"version":"b657c95c11088d77fc1bfc9c84d940f778bf9d12","lessThan":"416d3e5f8a30ed04fe21ba7dc73c2841c3b56265","status":"affected","versionType":"git"},{"version":"b657c95c11088d77fc1bfc9c84d940f778bf9d12","lessThan":"ed0f938f946f16b772e99cb8c277ab57828e5be4","status":"affected","versionType":"git"},{"version":"b657c95c11088d77fc1bfc9c84d940f778bf9d12","lessThan":"83f6756a7b71adec0a41ae68e079a38906d59c6c","status":"affected","versionType":"git"},{"version":"b657c95c11088d77fc1bfc9c84d940f778bf9d12","lessThan":"38c1ef7ce50eb4af0f89038b8aba12396ddb9233","status":"affected","versionType":"git"},{"version":"b657c95c11088d77fc1bfc9c84d940f778bf9d12","lessThan":"d837068eefbc2651fe5789bf75a0f945710f7b8e","status":"affected","versionType":"git"},{"version":"b657c95c11088d77fc1bfc9c84d940f778bf9d12","lessThan":"2174c68f623b74bd8690a4a6a4a52882d8ac3dc3","status":"affected","versionType":"git"},{"version":"b657c95c11088d77fc1bfc9c84d940f778bf9d12","lessThan":"3bfeb436d4be6a2beb56cab344770e93e6b07260","status":"affected","versionType":"git"},{"version":"b657c95c11088d77fc1bfc9c84d940f778bf9d12","lessThan":"7ebc672fab7a76e1e47e0f2fc1ee48118d27fde4","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ocfs2/inode.c"],"versions":[{"version":"2.6.29","status":"affected"},{"version":"0","lessThan":"2.6.29","status":"unaffected","versionType":"semver"},{"version":"5.10.261","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.212","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.178","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.145","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.97","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.40","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.5","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"5.10.261"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"5.15.212"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.12.97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/416d3e5f8a30ed04fe21ba7dc73c2841c3b56265"},{"url":"https://git.kernel.org/stable/c/ed0f938f946f16b772e99cb8c277ab57828e5be4"},{"url":"https://git.kernel.org/stable/c/83f6756a7b71adec0a41ae68e079a38906d59c6c"},{"url":"https://git.kernel.org/stable/c/38c1ef7ce50eb4af0f89038b8aba12396ddb9233"},{"url":"https://git.kernel.org/stable/c/d837068eefbc2651fe5789bf75a0f945710f7b8e"},{"url":"https://git.kernel.org/stable/c/2174c68f623b74bd8690a4a6a4a52882d8ac3dc3"},{"url":"https://git.kernel.org/stable/c/3bfeb436d4be6a2beb56cab344770e93e6b07260"},{"url":"https://git.kernel.org/stable/c/7ebc672fab7a76e1e47e0f2fc1ee48118d27fde4"}],"title":"ocfs2: reject non-inline dinodes with i_size and zero i_clusters","x_generator":{"engine":"bippy-1.2.0"}}}}