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CVE-2026-89657: Linux

7.5

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, без вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: libceph: validate OSD extent maps before cursor advance net/ceph/osd_client.c:osd_sparse_read() validates that the sparse-read data length matches the summed extent lengths, but it does not validate that each OSD-supplied extent is monotonic and lies inside the original request range. A malformed authenticated OSD reply can advertise a far-forward nonzero extent offset with a matching data length and make the client advance the message-data cursor beyond the request buffer. This reaches the BUG_ON(!*length) assertion in ceph_msg_data_next() from the client receive path. Impact: A malicious or compromised authenticated Ceph OSD peer can crash a kernel Ceph client via a malformed sparse-read reply. Reject sparse extent maps that overflow, move backwards, overlap, or extend outside the original sparse-read request before advancing the cursor. [ idryomov: perform sparse_extent_map_valid() check a bit earlier, in CEPH_SPARSE_READ_DATA_LEN instead of CEPH_SPARSE_READ_DATA_PRE state ]

    Засегнати продукти

    • Linux Linux: f628d799972799023d32c2542bb2639eb8c4f84e преди 94ae5145c520618802b0a24c047dcd5f05835db8; f628d799972799023d32c2542bb2639eb8c4f84e преди 058ffa81f9440c5b4714685611cf697fd3739ec9; f628d799972799023d32c2542bb2639eb8c4f84e преди 2571b35883268a266554e80d368e67fdfea7fb9d; f628d799972799023d32c2542bb2639eb8c4f84e преди 201db408872ca12cf09e36bf0f560138c3dcfa1c; f628d799972799023d32c2542bb2639eb8c4f84e преди 9ec08b7499a62c6d4afa93d36ab47a43fcad57d1
    • Linux Linux: 6.6; преди 6.6; 6.6.157 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

    CVE-2026-89657: Linux | freedomonline.bg