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CVE-2026-89847: Linux

9.8

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, без вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Avoid double completion in async IOCB timeout qla2x00_async_iocb_timeout() tries to abort a timed-out async IOCB. When qla24xx_async_abort_cmd() fails, both the SRB_LOGIN_CMD path and the SRB_CTRL_VP/default path scan outstanding_cmds[] for the SRB and then call sp->done(sp, QLA_FUNCTION_TIMEOUT) unconditionally, without checking whether the SRB was actually found and removed. If the response ISR completes the same handle first, it removes the SRB under qp_lock_ptr and runs sp->done() -> complete(sp->comp). The submitter qla24xx_control_vp() wakes from wait_for_completion(), clears sp->comp, drops its reference and returns, reclaiming the on-stack completion. The timer reference keeps the SRB alive across the timeout handler, but not the submitter's stack. The timeout then issues a second sp->done() -> qla_ctrlvp_sp_done(), which evaluates "if (sp->comp) complete(sp->comp)"; with the pointer loaded before the submitter's NULL store, complete() writes into the freed stack frame, a use-after-free. Track whether this path removed the SRB from outstanding_cmds and only call sp->done() when it did, so the command is completed exactly once by whichever path owns it. This mirrors the sp_found guard already used in qla24xx_abort_iocb_timeout().

    Засегнати продукти

    • Linux Linux: f6145e86d21fccd59bbb87bc1e1eb076658fd79a преди 71a7b6e3c7f121439f51a058e53d4a8e05b63dec; f6145e86d21fccd59bbb87bc1e1eb076658fd79a преди 7257b5e1fb6c9387714f66e01b79ec82b717eede; f6145e86d21fccd59bbb87bc1e1eb076658fd79a преди f5b660e0b0d9190d8853c795c2522cc5f8c93003; f6145e86d21fccd59bbb87bc1e1eb076658fd79a преди 6e217a9482eabbd8b29847be334c74cf468d3544; f6145e86d21fccd59bbb87bc1e1eb076658fd79a преди d6d856c722f40f0694ff755208552e658db6dd42; f6145e86d21fccd59bbb87bc1e1eb076658fd79a преди 9fa1d71233a82416492d9c9de9756ebe140fe714; f6145e86d21fccd59bbb87bc1e1eb076658fd79a преди 845d4abd92cd2f97551356c8b281ad6e197acb07; f6145e86d21fccd59bbb87bc1e1eb076658fd79a преди bb45bc4bd53c95a7bf6f782577b5ede94c0f8aa8
    • Linux Linux: 4.19; преди 4.19; 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.*; 6.18.51 до 6.18.*; 7.2.5 до 7.2.*; 7.3 до *

    История

    • 16 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-89847: Linux | freedomonline.bg