CVE-2025-68266bfs: Reconstruct file type when loading from disk
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: bfs: Reconstruct file type when loading from disk syzbot is reporting that S_IFMT bits of inode->i_mode can become bogus when the S_IFMT bits of the 32bits "mode" field loaded from disk are corrupted or when the 32bits "attributes" field loaded from disk are corrupted. A documentation says that BFS uses only lower 9 bits of the "mode" field. But I can't find an explicit explanation that the unused upper 23 bits (especially, the S_IFMT bits) are initialized with 0. Therefore, ignore the S_IFMT bits of the "mode" field loaded from disk. Also, verify that the value of the "attributes" field loaded from disk is either BFS_VREG or BFS_VDIR (because BFS supports only regular files and the root directory).
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Deferred
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before d0c5ec1f57d8fbb953f166a27d9d32473dc8f3e4; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before aeccd6743ee4fdd1ab8cfcbb5b9a20b613418f6d; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 8f73336b75bd3457b6f9410f2a0601a238f32238; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before a9f626396bfe66f49b743601e862767928237cc0; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 77899444d46162aeb65f229590c26ba266864223; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before a8cb796e7e2cb7971311ba236922f5e7e1be77e6; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 34ab4c75588c07cca12884f2bf6b0347c7a13872 | CNA record |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
References
- https://git.kernel.org/stable/c/d0c5ec1f57d8fbb953f166a27d9d32473dc8f3e4
- https://git.kernel.org/stable/c/aeccd6743ee4fdd1ab8cfcbb5b9a20b613418f6d
- https://git.kernel.org/stable/c/8f73336b75bd3457b6f9410f2a0601a238f32238
- https://git.kernel.org/stable/c/a9f626396bfe66f49b743601e862767928237cc0
- https://git.kernel.org/stable/c/77899444d46162aeb65f229590c26ba266864223
- https://git.kernel.org/stable/c/a8cb796e7e2cb7971311ba236922f5e7e1be77e6
- https://git.kernel.org/stable/c/34ab4c75588c07cca12884f2bf6b0347c7a13872
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.