CVE-2026-72159ocfs2: reject non-inline dinodes with i_size and zero i_clusters
- —Not scoredno CVSS score yet
- 0.22%Exploitation in 30 daysEPSS · top 87% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: ocfs2: reject non-inline dinodes with i_size and zero i_clusters On a volume mounted without OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC, a non-inline regular file with non-zero i_size and zero i_clusters is structurally malformed: the extent map declares no allocated clusters yet the size header claims content exists. Keep rejecting that shape, but express it through a shared predicate so the same invariant is available to normal inode reads and online filecheck. The same zero-cluster shape is also malformed for non-inline directories. ocfs2 directory growth allocates backing storage before advancing i_size, and ocfs2_dir_foreach_blk_el() later walks until ctx->pos reaches i_size_read(inode). A forged directory dinode with a huge i_size and no clusters would repeatedly fail on holes while advancing through the claimed size. Sparse regular files remain exempt: on sparse-alloc volumes, truncate can legitimately grow i_size without allocating clusters. System inodes and inline-data dinodes also retain their separate storage rules. Mirror the check in ocfs2_filecheck_validate_inode_block() as well. filecheck reports through its own error namespace, so malformed size/cluster state is logged as a filecheck invalid-inode result rather than via ocfs2_error(), but it must not proceed into ocfs2_populate_inode().
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 3 months later
· 3 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.22% · top 87% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected b657c95c11088d77fc1bfc9c84d940f778bf9d12 – < 416d3e5f8a30ed04fe21ba7dc73c2841c3b56265
- affected b657c95c11088d77fc1bfc9c84d940f778bf9d12 – < ed0f938f946f16b772e99cb8c277ab57828e5be4
- affected b657c95c11088d77fc1bfc9c84d940f778bf9d12 – < 83f6756a7b71adec0a41ae68e079a38906d59c6c
- affected b657c95c11088d77fc1bfc9c84d940f778bf9d12 – < 38c1ef7ce50eb4af0f89038b8aba12396ddb9233
- affected b657c95c11088d77fc1bfc9c84d940f778bf9d12 – < d837068eefbc2651fe5789bf75a0f945710f7b8e
- affected b657c95c11088d77fc1bfc9c84d940f778bf9d12 – < 2174c68f623b74bd8690a4a6a4a52882d8ac3dc3
- affected b657c95c11088d77fc1bfc9c84d940f778bf9d12 – < 3bfeb436d4be6a2beb56cab344770e93e6b07260
- affected b657c95c11088d77fc1bfc9c84d940f778bf9d12 – < 7ebc672fab7a76e1e47e0f2fc1ee48118d27fde4
- affected 2.6.29
- unaffected < 2.6.29
- unaffected 5.10.261 – ≤ 5.10.*
- unaffected 5.15.212 – ≤ 5.15.*
- unaffected 6.1.178 – ≤ 6.1.*
- unaffected 6.6.145 – ≤ 6.6.*
- unaffected 6.12.97 – ≤ 6.12.*
- unaffected 6.18.40 – ≤ 6.18.*
- unaffected 7.1.5 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/416d3e5f8a30ed04fe21ba7dc73c2841c3b56265 (opens in a new tab)
- https://git.kernel.org/stable/c/ed0f938f946f16b772e99cb8c277ab57828e5be4 (opens in a new tab)
- https://git.kernel.org/stable/c/83f6756a7b71adec0a41ae68e079a38906d59c6c (opens in a new tab)
- https://git.kernel.org/stable/c/38c1ef7ce50eb4af0f89038b8aba12396ddb9233 (opens in a new tab)
- https://git.kernel.org/stable/c/d837068eefbc2651fe5789bf75a0f945710f7b8e (opens in a new tab)
- https://git.kernel.org/stable/c/2174c68f623b74bd8690a4a6a4a52882d8ac3dc3 (opens in a new tab)
- https://git.kernel.org/stable/c/3bfeb436d4be6a2beb56cab344770e93e6b07260 (opens in a new tab)
- https://git.kernel.org/stable/c/7ebc672fab7a76e1e47e0f2fc1ee48118d27fde4 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-58917 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://cveledger.app/cve/CVE-2026-72159)Record last updated .