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CVE-2026-98479: 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: scsi: libiscsi_tcp: Check the data direction of a Data-In PDU The Data-In branch of iscsi_tcp_hdr_dissect() resolves the ITT to a task and copies the PDU's data segment into that command's scatterlist without asking whether the command was reading. iscsi_tcp_r2t_rsp() in the same file does ask, and rejects an R2T for a command that is not DMA_TO_DEVICE. A target that answers a WRITE command's ITT with a Data-In therefore has the initiator write target-supplied bytes into the pages that write was about to send. Those are the caller's own pinned pages for an O_DIRECT write, and page cache pages for a buffered one. Observed against a test target that emits one 512-byte Data-In naming a 128 KB write's ITT, after the R2T for that write. With O_DIRECT the caller's buffer ends up holding 512 bytes of the target's data while pwrite() returns 131072. Buffered is quieter: pwrite() and fsync() both succeed, nothing is logged, and reading those blocks back returns the target's bytes out of the page cache without a command going on the wire. Check the direction before using the scatterlist, the way the R2T path already does.

    Засегнати продукти

    • Linux Linux: a081c13e39b5c17052a7b46fafa61019c4c110ff преди 79991b770fc3685b1d5cf805b659a879edd19931; a081c13e39b5c17052a7b46fafa61019c4c110ff преди 8db1232945bc663fb94f300090a1fc108de99296; a081c13e39b5c17052a7b46fafa61019c4c110ff преди 94e5bdd08e51c450d954bc592f591c233ca5c9df; a081c13e39b5c17052a7b46fafa61019c4c110ff преди de96dc11aee0d058927bff94a168e3c5c46483e2; a081c13e39b5c17052a7b46fafa61019c4c110ff преди e3b25bf2cf2496e85bc05b33360faf9fdf880e03; a081c13e39b5c17052a7b46fafa61019c4c110ff преди ee56b5e18f566c0b5a183379dcd63d402cebf2f8; a081c13e39b5c17052a7b46fafa61019c4c110ff преди 24ffc919467d20951f0f132d1c75294e2e91e09b; a081c13e39b5c17052a7b46fafa61019c4c110ff преди bce07e2f37b5e4a427d36fd6b1c14067b27591db
    • Linux Linux: 2.6.29; преди 2.6.29; 5.10.271 до 5.10.*; 5.15.222 до 5.15.*; 6.1.189 до 6.1.*; 6.6.158 до 6.6.*; 6.12.112 до 6.12.*; 6.18.55 до 6.18.*; 7.2.9 до 7.2.*; от 7.3 нататък

    История

    • 18 октомври 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-98479: Linux | freedomonline.bg