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CVE-2026-72160: Linux

8.8

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се по мрежата, без особени условия, с обикновен потребителски вход и без действие от потребителя.

  • Експлоатация: няма данни за експлоатация
  • Атаката не може да се автоматизира

Описание

Оригинално описание

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().

Засегнати продукти

  • Linux Linux: b657c95c11088d77fc1bfc9c84d940f778bf9d12 преди 2e3aac33988ef4e4170141db8e995693ea38357c; b657c95c11088d77fc1bfc9c84d940f778bf9d12 преди fb024ea29f6cb1f01745e5f2e31646f3acb9aa6f; b657c95c11088d77fc1bfc9c84d940f778bf9d12 преди 157d31ef45038d89cd19620105e082d43c8e41e0; b657c95c11088d77fc1bfc9c84d940f778bf9d12 преди a5b555bcabbb0aff8745ad181768eaf9d964c1ee; b657c95c11088d77fc1bfc9c84d940f778bf9d12 преди 82afe13558354390d8a592a5334d5f4fd72c0e5c; b657c95c11088d77fc1bfc9c84d940f778bf9d12 преди 4db3b6a2a8ecf2a89d26a4090ace4072c6fad050; b657c95c11088d77fc1bfc9c84d940f778bf9d12 преди b858f2d57cfc9d57ce61b86051d603dc0ebccd40; b657c95c11088d77fc1bfc9c84d940f778bf9d12 преди 5366a017099c6a3c443be908a05f26fd72af12a1
  • Linux Linux: 2.6.29; преди 2.6.29; 5.10.261 до 5.10.*; 5.15.212 до 5.15.*; 6.1.178 до 6.1.*; 6.6.145 до 6.6.*; 6.12.97 до 6.12.*; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; от 7.2 нататък

История

  • 15 август 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-72160: Linux | freedomonline.bg