CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, 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: dm array: validate array block headers on read array_block_check() validates blocknr and csum and nothing else, while node_check(), next to it, has bounded the structural fields since both were written. dm_array_cursor_next() takes its loop bound from the on-disk nr_entries and element_at() is unguarded pointer arithmetic, so a count larger than the block holds keeps the cursor in one block while the index grows past it and the read walks off the dm-bufio buffer -- dm_cache_load_mappings() drives it once per cache block at activation. Check the header against itself: reject a zero value_size, require max_entries to equal calc_max_entries() for that value_size and block size, and require nr_entries to fit. Equality rather than an upper bound, since a count below the real capacity trips BUG_ON() in fill_ablock() and trim_ablock(). Metadata dm-array writes satisfies all three.
Засегнати продукти
- Linux Linux: 6513c29f44f2cc970c0e9fecfe5a6526c3e73025 преди e09d8b34ed199c8b7d7528c2b8324aa7cff712f8; 6513c29f44f2cc970c0e9fecfe5a6526c3e73025 преди 0e3b8f371c385c212b6e6f76c66f5b3f5bcfea62; 6513c29f44f2cc970c0e9fecfe5a6526c3e73025 преди 67adda7ed5da3e3b64f5b9021a02c21fb374fd9c; 6513c29f44f2cc970c0e9fecfe5a6526c3e73025 преди b33f76d33aaeacf3baf3370d8d64985169b36600; 6513c29f44f2cc970c0e9fecfe5a6526c3e73025 преди 9808ddffb4bc659352df3020cd84d9d864820ee5; 6513c29f44f2cc970c0e9fecfe5a6526c3e73025 преди 2965787723084835b18dfe993cd450ebf5bd4540
- Linux Linux: 3.9; преди 3.9; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; 7.3 до *
История
- 11 септември 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-89574
- https://nvd.nist.gov/vuln/detail/CVE-2026-89574
- https://git.kernel.org/stable/c/e09d8b34ed199c8b7d7528c2b8324aa7cff712f8
- https://git.kernel.org/stable/c/0e3b8f371c385c212b6e6f76c66f5b3f5bcfea62
- https://git.kernel.org/stable/c/67adda7ed5da3e3b64f5b9021a02c21fb374fd9c
- https://git.kernel.org/stable/c/b33f76d33aaeacf3baf3370d8d64985169b36600
- https://git.kernel.org/stable/c/9808ddffb4bc659352df3020cd84d9d864820ee5
- https://git.kernel.org/stable/c/2965787723084835b18dfe993cd450ebf5bd4540