CVE-2026-72160

CVE CVE-2026-72160EUVD EUVD-2026-58918Veröffentlicht 2026-08-15T05:53:28.000ZZuletzt geändert 2026-08-17T05:41:03.000ZCVSS 8.8

Was das Advisory beschreibt

In the Linux kernel, the following vulnerability has been resolved: ocfs2: reject dinodes with non-canonical i_mode type Patch series "ocfs2: harden inode validators against forged metadata", v2. This series adds three structural checks to OCFS2 dinode validation so malformed on-disk fields are rejected before ocfs2_populate_inode() copies them into the in-core inode. The checks cover: - i_mode values whose type bits do not name a canonical POSIX file type; - non-device dinodes whose id1.dev1.i_rdev field is non-zero; and - non-inline dinodes that claim non-zero i_size while i_clusters is zero, covering directories unconditionally and regular files on non-sparse volumes. The normal read path reports these through ocfs2_error(), matching the existing suballoc-slot, inline-data, chain-list, and refcount checks. The online filecheck path uses the same structural predicates but keeps its own reporting contract, returning OCFS2_FILECHECK_ERR_INVALIDINO instead of calling ocfs2_error(). This patch (of 3): ocfs2_validate_inode_block() currently accepts any non-zero i_mode value. ocfs2_populate_inode() then copies that mode verbatim into inode->i_mode and dispatches on i_mode & S_IFMT to the file/dir/symlink/special_file iops; an unrecognised type falls through to ocfs2_special_file_iops and init_special_inode(). Reject dinodes whose type bits do not name one of the seven canonical POSIX file types. Use fs_umode_to_ftype(), the same generic file-type conversion helper OCFS2 already uses for directory entries, so the accepted inode type set matches the kernel file-type vocabulary instead of open-coding a local switch. Apply the same structural check to the online filecheck read path. filecheck keeps its own error namespace, so it reports malformed i_mode through the filecheck logger and OCFS2_FILECHECK_ERR_INVALIDINO instead of calling ocfs2_error(), but it must not allow a malformed dinode to proceed into ocfs2_populate_inode().

Quelle: EUVD (ENISA), im Wortlaut der Meldung.

Produkte, die das Advisory nennt

Diese Angaben stammen aus der Meldung selbst, nicht aus einer Prüfung durch uns.

• Linux — Linux b657c95c11088d77fc1bfc9c84d940f778bf9d12 <157d31ef45038d89cd19620105e082d43c8e41e0; patch: 5.10.261; patch: 6.1.178; b657c95c11088d77fc1bfc9c84d940f778bf9d12 <82afe13558354390d8a592a5334d5f4fd72c0e5c; patch: 6.6.145; 2.6.29; patch: 7.2; b657c95c11088d77fc1bfc9c84d940f778bf9d12 <a5b555bcabbb0aff8745ad181768eaf9d964c1ee; b657c95c11088d77fc1bfc9c84d940f778bf9d12 <fb024ea29f6cb1f01745e5f2e31646f3acb9aa6f; patch: 7.1.5; patch: 0; patch: 6.18.40; b657c95c11088d77fc1bfc9c84d940f778bf9d12 <5366a017099c6a3c443be908a05f26fd72af12a1; patch: 5.15.212; b657c95c11088d77fc1bfc9c84d940f778bf9d12 <b858f2d57cfc9d57ce61b86051d603dc0ebccd40; b657c95c11088d77fc1bfc9c84d940f778bf9d12 <2e3aac33988ef4e4170141db8e995693ea38357c; b657c95c11088d77fc1bfc9c84d940f778bf9d12 <4db3b6a2a8ecf2a89d26a4090ace4072c6fad050; patch: 6.12.97

Die genannten Versionen sind die Angabe der Meldung. Patchlage vergleicht keine Versionsnummern und leitet aus ihnen keine Aussage ab — welche Version installiert ist, muss ein Mensch nachsehen.

Im Produktkatalog geführt

Für diese Produkte kann ein Bestand in Patchlage erfasst werden. Ein Advisory dazu erscheint am Morgen danach im Lagebericht.

• Linux — Linux

Patchlage meldet Treffer und Verdachtsfälle. Zu allem anderen sagt dieses System nichts — weder diese Seite noch der Lagebericht behauptet je, dass ein Bestand sicher ist.