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CVE-2026-93095: Linux

7.8

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 локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: hfsplus: validate thread record before delete key rebuild hfsplus_delete_cat() is called with str == NULL when the last open reference to an unlinked HFS+ hardlink backing inode is closed. In that case, the function finds the catalog thread by CNID and rebuilds the catalog key from thread.nodeName. That reconstruction path reads thread.nodeName.length directly from the catalog B-tree into fd.search_key and then copies length * 2 bytes into fd.search_key->cat.name.unicode. It does not first check that the found record is a thread record or that its size matches the thread name. A corrupted image can therefore provide an oversized thread name length and make hfs_bnode_read() write past the catalog search-key allocation. Read the CNID record through hfsplus_brec_read_cat(), which bounds the record read to sizeof(hfsplus_cat_entry) and verifies that a thread record's size exactly matches nodeName.length. Together, these checks ensure an accepted thread name fits HFSPLUS_MAX_STRLEN. Reject non-thread records before building the delete key from the validated thread name. Share the thread-record-type helper between hfsplus_find_cat() and hfsplus_delete_cat().

    Засегнати продукти

    • Linux Linux: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 33cda0036bc683fc888c20b04a5fc030e3e8413b; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди b9729c51a8b67f8b20b8a8cf395da4be63a0c15b; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди af48abc1b00d865c3f4c4d76b901c44115cb7162; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди e20f3b749ad241df77ec1c3e13a9c22209aa1eb3; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 7898beee166c1145c0bca364d687b8437435bf1a; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди e31985c67ba00a59d9b1340af473c1dbe6c87856; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 473ea7aa35615829f0de7a71e8691d69dc24e328; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди e2ea5cac61acfc11dad22f1d2d4bc71d56c52a20
    • Linux Linux: 2.6.12; преди 2.6.12; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.110 до 6.12.*; 6.18.52 до 6.18.*; 7.2.6 до 7.2.*; от 7.3 нататък

    История

    • 17 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-93095: Linux | freedomonline.bg